Martin Marietta Materials (MLM)

Company ID: 289 | CIK: 0000916076
10-Q view:
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Segments are charted by their disclosed metrics (revenue, segment profit, etc.). Each line is a single segment. Reconciliation/corporate items are excluded. Major customers are shown as a percentage of revenue. Operational KPIs are grouped by metric concept; sub-metrics appear as separate lines.

Geographic Segments

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Business Unit / Product Segments

Major Customers (% of Revenue)

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Operational KPIs

Ready mixed concrete average selling price (adr)

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Cement backlog (backlog)

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Aggregates reserves life (capacity)

Common Stockholders (customers)

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Unionized hourly employees (headcount)

Heritage aggregates inventory (inventory_units)

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Land holdings (net_acreage)

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Military panel orders (orders_received)

Acquired quarry reserves (other)

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Acquisition-derived sales (other)

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Acquisitions completed (other)

Adjusted EBITDA (other)

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Adjusted diluted earnings per share (other)

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Aggregates ASP (other)

Aggregates Average Selling Price (other)

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Aggregates average price (other)

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Aggregates average selling price (other)

Aggregates avg selling price (other)

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Aggregates cost per ton growth (other)

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Aggregates division average selling price growth (other)

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Aggregates end-market mix (other)

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Aggregates end-use mix (other)

Aggregates gross profit mix (other)

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Aggregates market mix (other)

Aggregates mineral reserves (other)

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Aggregates mix-adjusted ASP (other)

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Aggregates operating sites (other)

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Aggregates price change (other)

Aggregates price growth (other)

Aggregates price growth guidance (other)

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Aggregates price increase (other)

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Aggregates price per ton (other)

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Aggregates price variance (other)

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Aggregates pricing (other)

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Aggregates product gross margin (other)

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Aggregates product line pricing change (other)

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Aggregates product line volume change (other)

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Aggregates production cost per ton change (other)

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Aggregates reserve life (other)

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Aggregates reserves (other)

Aggregates reserves acquired (other)

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Aggregates reserves added (other)

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Aggregates reserves life (other)

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Aggregates reserves tonnage (other)

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Aggregates selling price (other)

Aggregates shipment end-use mix (other)

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Aggregates shipment growth (other)

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Aggregates shipment mix (other)

Aggregates shipment mix by end use (other)

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Aggregates shipment mode (other)

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Aggregates shipments by end-use market (other)

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Aggregates shipments by transport mode (other)

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Aggregates transportation mix (other)

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Aggregates transportation mode (other)

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Aggregates volume change (other)

Aggregates volume growth (other)

Aggregates volume variance (other)

Asphalt ASP (other)

Asphalt average price (other)

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Asphalt average selling price (other)

Asphalt avg selling price (other)

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Asphalt plants (other)

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Asphalt price per ton (other)

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Asphalt pricing (other)

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Asphalt pricing change (other)

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Asphalt selling price (other)

Asphalt shipments (other)

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Asphalt volume growth (other)

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Average aggregates selling price (other)

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Average cement selling price (other)

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Average diesel fuel cost (other)

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Average diesel fuel price (other)

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Average diesel price (other)

Average reserve life (other)

Average sales price increase (other)

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Average selling price (other)

Average selling price growth forecast (other)

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Average selling price increase (other)

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Average selling price per ton (other)

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Average selling price variance (other)

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Barge freight cost increase (other)

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Bridge deck installations (other)

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Capital expenditures (other)

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Cash dividends per share (other)

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Cash from operating activities (other)

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Cement ASP (other)

Cement average selling price (other)

Cement avg selling price (other)

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Cement distribution terminals (other)

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Cement limestone reserves (other)

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Cement mix-adjusted ASP (other)

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Cement mix-adjusted selling price (other)

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Cement plants (other)

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Cement pricing (other)

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Cement pricing change (other)

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Cement product gross margin (other)

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Cement properties (other)

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Cement reserve life (other)

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Cement selling price (other)

Cement shipment growth (other)

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Cement shipments (other)

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Cement transport mode (other)

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Common Stock Outstanding (other)

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Common shares outstanding (other)

Common shares repurchased (other)

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Common stock shares outstanding (other)

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Composite bridge deck installations (other)

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Concrete average selling price (other)

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Consolidated EBITDA (other)

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Cost of sales mix (other)

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Crushed stone reserves (other)

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Days Sales Outstanding (other)

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Days sales outstanding (other)

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Debt to EBITDA Ratio (other)

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Debt to EBITDA leverage (other)

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Debt to EBITDA leverage ratio (other)

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Debt to EBITDA ratio (other)

Debt to total capitalization (other)

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Debt to total capitalization ratio (other)

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Debt-to-EBITDA ratio (other)

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Depreciation depletion amortization (other)

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Depreciation depletion and amortization (other)

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Depreciation, depletion and amortization (other)

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Diesel Fuel Cost (other)

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Diesel consumption (other)

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Diesel cost per gallon (other)

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Diesel fuel average cost (other)

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Diesel fuel consumed (other)

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Diesel fuel consumption (other)

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Diesel fuel cost (other)

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Diesel fuel cost per gallon (other)

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Diesel fuel price (other)

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Diesel price average (other)

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Diluted earnings per share (other)

Distribution terminals (other)

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Distribution yard sales volume (other)

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Distribution yard shipments (other)

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Distribution yard tonnage (other)

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Distribution yards (other)

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Dividends per share (other)

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Division pricing variance (other)

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Division volume variance (other)

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Dodge Momentum Index (other)

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Downstream properties (other)

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EBITDA (other)

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EBITDA margin (other)

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Effective income tax rate (other)

Effective tax rate (other)

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End-market shipment mix (other)

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End-use market mix (other)

End-use market share (other)

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End-use market shipment growth (other)

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Energy cost increase (other)

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Energy cost inflation (other)

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Energy cost share (other)

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Energy-related cost increase (other)

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Expected heritage aggregates price growth (other)

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Freight transport mix (other)

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Geographic footprint (other)

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Greensites opened or initiated (other)

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Gross margin (other)

Gross margin excluding freight (other)

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Heritage Aggregates Pricing (other)

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Heritage Aggregates Pricing Change (other)

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Heritage Aggregates Pricing Variance (other)

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Heritage Aggregates Volume Change (other)

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Heritage Aggregates Volume Variance (other)

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Heritage aggregates end-use mix (other)

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Heritage aggregates price change (other)

Heritage aggregates price growth (other)

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Heritage aggregates price increase (other)

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Heritage aggregates pricing (other)

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Heritage aggregates pricing change (other)

Heritage aggregates pricing growth (other)

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Heritage aggregates pricing variance (other)

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Heritage aggregates shipment growth (other)

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Heritage aggregates volume change (other)

Heritage aggregates volume growth (other)

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Heritage aggregates volume increase (other)

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Heritage aggregates volume variance (other)

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Heritage average selling price growth (other)

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Heritage price increase (other)

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Heritage pricing growth (other)

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Heritage pricing variance (other)

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Heritage production growth (other)

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Heritage volume growth (other)

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Highway obligations growth (other)

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Housing starts growth (other)

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Hurricanes affecting operations (other)

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Indicated crushed stone resources (other)

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Indicated sand and gravel resources (other)

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Inferred mineral resources (other)

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Infrastructure share of Aggregates sales (other)

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Infrastructure share of demand (other)

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Joint venture quarries (other)

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Land holdings (other)

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Land owned (other)

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Letters of credit outstanding (other)

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Leverage ratio (other)

Lime production sales split (other)

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Lime sold externally (other)

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Lime used internally (other)

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Limestone reserves (other)

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Limestone reserves added (other)

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Liquid asphalt price (other)

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Lost time incident rate (other)

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Lost-Time Incident Rate (other)

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Lost-time incident rate (other)

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MSHA 104(b) orders (other)

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MSHA 104(d) citations (other)

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MSHA S&S citations (other)

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MSHA flagrant violations (other)

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MSHA imminent danger orders (other)

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MSHA legal actions pending (other)

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MSHA proposed assessments (other)

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Magnesia Specialties foreign sales (other)

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Magnesia Specialties gross margin (other)

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Magnesia Specialties sales mix (other)

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Magnesia revenue mix (other)

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Magnesia sales to steel industry (other)

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Marock mineral reserves (other)

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Measured and indicated mineral resources (other)

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Measured crushed stone resources (other)

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Measured sand and gravel resources (other)

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Menefee mineral reserves (other)

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Mineral Reserves Life (other)

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Mineral reserve life (other)

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Mineral reserves (other)

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Mineral reserves acquired (other)

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Mineral reserves life (other)

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Mix-adjusted aggregates ASP (other)

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Mix-adjusted average selling price (other)

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Mix-adjusted cement ASP (other)

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NC toll road aggregates demand (other)

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Natural gas cost change (other)

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Net debt to EBITDA leverage (other)

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Net debt to EBITDA ratio (other)

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Net sales by end market (other)

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Net sales by state (other)

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Net sales state concentration (other)

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Net working capital (other)

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Number Of Reportable Segments (other)

Number of Reportable Segments (other)

Operating cash flow (other)

Operating leases commitments (other)

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Operating locations (other)

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Operating margin (other)

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Operating margin excluding freight (other)

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Operating margin improvement (other)

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Operating states (other)

Organic aggregates end-use mix (other)

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Organic aggregates shipment mix (other)

Organic mix-adjusted ASP (other)

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Organic mix-adjusted average selling price (other)

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Owned land (other)

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Patents (other)

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Patents granted or pending (other)

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Pricing variance (other)

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Producing quarries (other)

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Production cost per ton change (other)

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Production productivity (other)

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Proposed MSHA assessments (other)

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Public sector shipment share (other)

Public works share of aggregates shipments (other)

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Quarries and distribution facilities (other)

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Quarries and facilities (other)

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Quarries inoperable (other)

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Quarries mines and yards (other)

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Quarries operational (other)

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Quarterly cash dividend per share (other)

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Railcars on order (other)

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Ratio of earnings to fixed charges (other)

Raw material reserve life (other)

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Raw material reserves coverage (other)

Raw material reserves life (other)

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Raw materials reserves (other)

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Raw materials reserves added (other)

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Ready Mixed Concrete average selling price (other)

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Ready mix average selling price (other)

Ready mix avg selling price (other)

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Ready mix plants (other)

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Ready mix selling price (other)

Ready mix volume growth (other)

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Ready mix volume variance (other)

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Ready mixed concrete ASP (other)

Ready mixed concrete average price (other)

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Ready mixed concrete average selling price (other)

Ready mixed concrete gross margin (other)

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Ready mixed concrete plants (other)

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Ready mixed concrete price (other)

Ready mixed concrete pricing (other)

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Ready mixed concrete pricing change (other)

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Ready mixed concrete selling price (other)

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Ready mixed concrete shipments (other)

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Ready mixed concrete volume variance (other)

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Remaining repurchase authorization (other)

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Repurchase authorization remaining (other)

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Research and development spend (other)

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Research and development spending (other)

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Reserve life (other)

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Reserve life (normalized) (other)

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Reserves life (other)

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Return on shareholders' equity (other)

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SG&A expense ratio (other)

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SG&A percent of revenues (other)

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SG&A ratio (other)

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Sales to steel industry (other)

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Sand and gravel reserves (other)

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Service revenues (other)

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Share repurchase authorization remaining (other)

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Share repurchases (other)

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Shareholders equity (other)

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Shareholders of record (other)

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Shares available for repurchase (other)

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Shares outstanding (other)

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Shares remaining for repurchase (other)

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Shares remaining under repurchase authorization (other)

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Shares repurchased (other)

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Shipment end-market mix (other)

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Shipment transportation mode (other)

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Shipment transportation mode mix (other)

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Shipment volume change (other)

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Shipment volume variance (other)

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Shipments by end market (other)

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Shipments by end-use market (other)

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Shipments by transport mode (other)

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Shipments by transportation mode (other)

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Specialties revenue mix (other)

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Specialty Products sales mix (other)

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States of operation (other)

States served (other)

States with operations (other)

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Steel industry revenue share (other)

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Steel industry sales share (other)

Steel industry share of Magnesia sales (other)

Stock awards outstanding (other)

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Stock options outstanding (other)

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Tons per man hour (other)

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Tons sold via distribution yards (other)

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Top 5 states revenue share (other)

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Top five state revenue concentration (other)

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Top five states revenue share (other)

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Top five states sales share (other)

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Top states revenue share (other)

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Top states sales share (other)

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Top-10 state revenue concentration (other)

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Total distribution facilities (other)

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Total injury incident rate (other)

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Total mineral reserves (other)

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Total volume growth (other)

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Trademarks (other)

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Transport mode mix (other)

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Transport mode share (other)

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Transportation mode mix (other)

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Underground aggregates mines (other)

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Underground mines (other)

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Union hourly employees (other)

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Union representation rate (other)

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Union-represented employees (other)

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Union-represented hourly employees (other)

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Unionized employees (other)

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Unused borrowing capacity (other)

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Unused credit capacity (other)

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Unused revolver capacity (other)

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Unused revolving capacity (other)

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Variable-rate borrowings (other)

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Vertically integrated revenue share (other)

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Vertically-integrated sales share (other)

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Volume variance (other)

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Volume/pricing variance (other)

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Waterborne freight cost increase (other)

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Weighted average interest rate (other)

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Year 2000 compliance costs (other)

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Year 2000 costs spent (other)

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Year 2000 program costs (other)

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Year 2000 project costs expensed (other)

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Year 2000 remediation cost (other)

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Year 2000 remediation costs (other)

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Years of production available (other)

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Years of reserve production (other)

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Years of reserves available (other)

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Years of reserves life (other)

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Years of reserves production available (other)

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Years of reserves remaining (other)

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us-gaap:NumberOfReportableSegments (other)

Probable aggregates reserves (probable_reserves)

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Aggregates shipments (production_volume)

Quarries and distribution yards (properties)

Zoned raw materials reserves (proved_developed_reserves)

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Proven and probable mineral reserves (proved_reserves)

us-gaap:RevenueRemainingPerformanceObligation (rpo)

Mine fatalities (safety_incidents)

Land owned (square_footage)

No 10-Q data

Ready mixed concrete volume (throughput)

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Injury incident rate (trir)

No 10-Q data

Aggregates Shipped (units_shipped)

Steel capacity utilization (utilization_rate)

No 10-Q data
Human capital disclosures. Workforce totals and demographics are point-in-time. Flow metrics use the year-to-date period for 10-Q and full year for 10-K. Workforce actions (RIFs, restructurings, acquisition-related changes) are listed in the table at the bottom.

Workforce Totals

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Demographics

No demographic data found.

Workforce Breakdowns

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HCM Metrics — Point-in-Time

No point-in-time HCM metrics found.

HCM Metrics — Flow (Annual / YTD)

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Workforce Actions

Period EndTypeStatusAffected% WorkforceAnnouncedExpected CompletionGeographySegment / FunctionChargeSourceNote
2026-06-30acquisition_additioncompleted2026-05-152026-05-15United States (greater St. Louis metropolitan area)West Group (Central Division)business_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Bolt-on aggregates business producing over 8 million tons annually; no employee count disclosed. Purchase accounting measurement period remains open.
2026-06-30acquisition_additionannounced2026-06-272026-12-31North America (US, Canada)Specialties (lime and industrial minerals)business_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		$13.5 billion purchase ($7.0 billion cash plus 10,953,543 shares); expected close in second half of 2026 subject to regulatory approval. No headcount disclosed; LNA operates 20 quarries/facilities and 45 distribution terminals.
2026-06-30acquisition_additioncompleted2026-05-15Greater St. Louis metropolitan areaWest Group (Central Division)business_combinations_footnote
f5-10q / Qwen3.6-27B-Q8_0		Acquired New Frontier Materials LLC (NFM), an aggregates-led business. Headcount not disclosed.
2026-06-30acquisition_additioncompleted2026-02-23Virginia, Missouri, Kansas, Vancouver, British ColumbiaEast Group and West Groupbusiness_combinations_footnote
f5-10q / Qwen3.6-27B-Q8_0		Completed asset exchange with QUIKRETE Holdings, Inc., acquiring aggregates operations and asphalt/paving business. Headcount not disclosed.
2026-06-30divestiture_reductioncompleted2026-02-23TexasEast Groupbusiness_combinations_footnote
f5-10q / Qwen3.6-27B-Q8_0		Divested Midlothian cement plant, related terminals, and Texas ready mixed concrete assets as part of QUIKRETE exchange. Headcount not disclosed.
2026-06-30othercompleted2026-04-30CorporateUSD -5 (millions)restructuring_footnote
f5-10q / Qwen3.6-27B-Q8_0		Curtailment event due to divestiture; certain employees ceased to be active participants in qualified defined benefit pension plan. Recognized $5 million curtailment gain. Employee count not disclosed.
2026-03-31acquisition_additioncompleted2026-02-232026-02-23Virginia, Missouri, Kansas, Vancouver (British Columbia)Building Materials — East Group and West GroupUSD 3,175 (millions)business_combinations_footnote
f5-10q / GLM-5.3-flash-fp4-HTML		Aggregates operations (~20 million tons annually) and a British Columbia asphalt/paving business acquired via asset exchange; no employee headcount figures disclosed.
2026-03-31divestiture_reductioncompleted2026-02-232026-02-23TexasMidlothian cement plant, cement distribution terminals, Texas ready mixed concrete plantsUSD 1,400 (millions)business_combinations_footnote
f5-10q / GLM-5.3-flash-fp4-HTML		Divested to QUIKRETE as part of asset exchange; $1.4 billion after-tax gain reported in discontinued operations. No employee headcount figures disclosed.
2026-03-31acquisition_additionannounced2026-04-19St. Louis metropolitan areaAggregatessubsequent_events
f5-10q / GLM-5.3-flash-fp4-HTML		Definitive agreement to acquire aggregates-led bolt-on producing over 8 million tons annually; expected to close in second half of 2026. No headcount figures disclosed.
2026-03-31acquisition_additioncompletedVirginia, Missouri, Kansas and Vancouver, British ColumbiaEast Group and West Group (Building Materials)business_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		QUIKRETE Holdings asset exchange closed 2026-02-23; acquired aggregates operations producing ~20 million tons annually plus a Vancouver asphalt and paving business and $450 million cash. No employee headcount transferred is disclosed.
2026-03-31divestiture_reductioncompletedTexas (Midlothian)East Group — cement and ready mixed concrete (reported as discontinued operations)business_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Midlothian cement plant, related distribution terminals, Texas ready mixed concrete plants and certain nonoperating land divested 2026-02-23 as part of the QUIKRETE exchange; after-tax gain of $1.4 billion. No employee headcount removed is disclosed.
2026-03-31acquisition_additionannounced2026-04-192026-12-31Greater St. Louis metropolitan areaBuilding Materials — aggregatessubsequent_events
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Definitive agreement to acquire New Frontier Materials, an aggregates-led business producing over 8 million tons annually; expected to close in the second half of 2026 subject to regulatory approvals. No headcount disclosed.
2026-03-31otherannounced2026-06Woodville, OhioSpecialties — lime plantother
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Collective bargaining agreement for hourly employees expires June 2026; disputes or failure to renew could disrupt operations. Disclosed as of 2025-12-31.
2026-03-31otherannounced2027-08Manistee, MichiganSpecialties — synthetic magnesia plantother
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Collective bargaining agreement expires August 2027. Disclosed as of 2025-12-31.
2026-03-31otherannounced2028-06Gabbs, NevadaSpecialties — magnesia mine and processing plantother
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Collective bargaining agreement expires June 2028. Disclosed as of 2025-12-31.
2025-12-31acquisition_additioncompleted2025-07-252025-07-25Nevada, North Carolina, Indiana, Pennsylvania (United States)Specialtiesbusiness_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		Acquisition of Premier Magnesia, LLC, described as the largest US producer of natural magnesite and magnesium sulfate, expanding the Specialties segment's product portfolio and magnesia reserves. Employee headcount added through the acquisition is not disclosed.
2025-12-31divestiture_reductionin_progress2025-08-03Texas (United States)West Group — Midlothian cement plant, related cement distribution terminals and Texas ready mixed concrete operationsdiscontinued_operations_footnote
f5-10k / GLM-5.3-flash-HTML		Definitive agreement with Quikrete Holdings, Inc. to exchange the company's sole cement business and remaining Texas ready mixed concrete assets for aggregates facilities and cash. Assets classified as held for sale at December 31, 2025 and results reported as discontinued operations; workforce transferring with the divested operations is not quantified.
2025-12-31divestiture_reductioncompleted2025-042025-04California (United States)West Group — asphalt and paving servicesMD&A
f5-10k / GLM-5.3-flash-HTML		California paving operations divested in April 2025; cited as a driver of lower paving revenues and reduced Other Building Materials gross profit in 2025. Employee headcount removed through the divestiture is not disclosed.
2025-12-31plant_closurecompleted2025West Group (United States)West Group — five operations no longer commercially viableUSD 21 (millions)other
f5-10k / GLM-5.3-flash-HTML		Pretax asset and portfolio rationalization charge recorded in fiscal 2025, primarily for discontinuing five West Group operations deemed no longer commercially viable; charge principally reflects recoverability assessment of long-lived assets. Employee headcount affected is not disclosed.
2025-12-31acquisition_additioncompleted2025-12-192025-12-19Minnesota (United States)Building Materials — aggregatesItem_1_Business
f5-10k / GLM-5.3-flash-HTML		Aggregates-led bolt-on acquisition completed December 19, 2025. Employee headcount added through the acquisition is not disclosed.
2025-12-31acquisition_additioncompleted2025-07-252025-07-25United States (Nevada, North Carolina, Indiana, Pennsylvania)Specialtiesbusiness_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Acquisition of Premier Magnesia, LLC; headcount added not disclosed. Purchase accounting measurement period remains open as of December 31, 2025
2025-12-31acquisition_additioncompleted2025-12-192025-12-19United States (Minnesota)Building Materials businessItem_1_Business
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Aggregates-led bolt-on acquisition completed in Minnesota; headcount added not disclosed
2025-12-31divestiture_reductioncompleted2025-04-30United States (California)West Group — paving operationsMD&A
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Divestiture of California paving operations completed April 2025; headcount removed not disclosed
2025-12-31restructuringcompleted2025-12-31United States (West Group markets)West GroupUSD 21 (millions)other
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Pretax asset and portfolio rationalization charge related to discontinuing five West Group operations deemed no longer commercially viable; employees affected not disclosed
2025-12-31divestiture_reductionin_progress2025-08-03United States (Texas)West Group — Midlothian cement plant, cement distribution terminals, Texas ready mixed concrete plantsbusiness_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Pending asset exchange with QUIKRETE; assets classified as held for sale and results reported as discontinued operations. Headcount to be transferred not disclosed; no closing date stated
2025-09-30acquisition_additioncompleted2025-07-25United States (Nevada, North Carolina, Indiana, Pennsylvania)Specialtiesbusiness_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Acquisition of Premier Magnesia, LLC, a magnesia-based products producer, funded with cash on hand and credit facility borrowings; no employee headcount disclosed. Purchase accounting measurement period remains open.
2025-09-30otherannounced2025-08-032025-12-31United States (Virginia, Missouri, Kansas, Texas) and Vancouver, British ColumbiaWest Group — cement, ready mixed concrete and aggregatesbusiness_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Asset exchange with QUIKRETE Holdings: company transfers Midlothian cement plant, cement terminals and certain Texas ready mixed concrete assets (classified held for sale/discontinued operations) and receives aggregates operations plus cash; no headcount disclosed for either side.
2024-12-31acquisition_additioncompleted2024-01-12ColoradoWest Group — aggregates (Denver metropolitan area platform)business_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		Acquired a leading Colorado aggregates producer; consideration and acquired employee headcount not disclosed. The local supply gained from this deal later motivated the Colorado long-haul rail distribution rationalization.
2024-12-31divestiture_reductioncompleted2024-02-09South Texas (New Braunfels plant; Austin/San Antonio region)West Group — cement and ready mixed concreteother
f5-10k / GLM-5.3-flash-HTML		Sold the Hunter cement plant, related distribution terminals and 20 ready mixed concrete plants to CRH Americas Materials for $2.1 billion cash, generating a $1.3 billion pretax gain ($976 million after tax). Headcount transferred with the divested operations was not disclosed; proceeds were redeployed into the BWI Southeast acquisition.
2024-12-31acquisition_additioncompleted2024-04-05Alabama, South Carolina, South Florida, Tennessee, VirginiaEast Group — aggregatesbusiness_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		Acquired 20 active aggregates operations from Blue Water Industries affiliates for $2.05 billion cash; carried a $20 million acquired-inventory step-up charge and $32 million of after-tax transaction/integration costs. Added employee headcount not disclosed.
2024-12-31restructuringcompletedColorado (inbound long-haul rail distribution corridors)West Group — aggregates long-haul distribution / railroad operationsUSD 50 (millions)other
f5-10k / GLM-5.3-flash-HTML		Decision in 2024 to discontinue use of certain long-haul distribution facilities transporting aggregates into Colorado because the January 2024 Albert Frei & Sons acquisition provides cheaper local supply; pretax noncash charge of $50 million ($37 million after tax, $0.61 per diluted share) for recoverability of PP&E and operating lease right-of-use assets tied to the ceased railroad operations. Affected employee count not disclosed; action recorded during fiscal 2024 (no specific announcement date given).
2024-12-31acquisition_additioncompleted2024-10-25South Florida (Fort Myers area)East Group — aggregatesbusiness_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		Acquisition funded with short-term borrowings later repaid via the November 2024 public debt offering; goodwill tax-deductible. Employee headcount not disclosed.
2024-12-31acquisition_additioncompleted2024-12-13West TexasWest Group — aggregatesbusiness_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		Aggregates bolt-on acquisition; goodwill tax-deductible. Employee headcount not disclosed.
2024-12-31divestiture_reductioncompleted2024-02-092024-02-09South Texas, United StatesWest Group — Cement and Ready Mixed Concretebusiness_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Sale of South Texas cement business and 20 ready mixed concrete plants to CRH for $2.1 billion; headcount not disclosed.
2024-12-31acquisition_additioncompleted2024-04-052024-04-05Alabama, South Carolina, South Florida, Tennessee, Virginia, United StatesEast Group — Aggregatesbusiness_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Acquisition of 20 active aggregates operations for $2.05 billion cash; headcount not disclosed.
2024-12-31acquisition_additioncompleted2024-01-122024-01-12Colorado, United StatesWest Group — Aggregatesbusiness_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Acquisition of Colorado aggregates producer; headcount not disclosed.
2024-12-31acquisition_additioncompleted2024-10-252024-10-25Fort Myers, South Florida, United StatesEast Group — Aggregatesbusiness_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Acquisition of South Florida aggregates supplier; headcount not disclosed.
2024-12-31acquisition_additioncompleted2024-12-132024-12-13West Texas, United StatesWest Group — Aggregatesbusiness_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Aggregates bolt-on acquisition in West Texas; headcount not disclosed.
2024-12-31acquisition_additioncompleted2024-10-012024-10-31South Florida and Southern California, United StatesEast Group and West Group — AggregatesItem_1_Business
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Pure aggregates assets acquired in South Florida and Southern California during October 2024; headcount not disclosed.
2024-12-31restructuringcompleted2024-01-122024-12-31Colorado, United StatesWest Group — Long-haul distribution / railroad operationsUSD 50 (millions)restructuring_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Noncash asset and portfolio rationalization charge for discontinuing long-haul distribution facilities serving Colorado after AFS acquisition; headcount impact not disclosed.
2024-09-30acquisition_additioncompleted2024-04-052024-04-05Alabama, South Carolina, South Florida, Tennessee, VirginiaEast Groupbusiness_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Acquisition of 20 active aggregates operations from Blue Water Industries LLC affiliates for $2.05 billion cash; no headcount added disclosed.
2024-09-30acquisition_additioncompleted2024-01-122024-01-12ColoradoWest Groupbusiness_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Acquisition of Albert Frei & Sons, Inc., an aggregates producer; no headcount added disclosed.
2024-09-30divestiture_reductioncompleted2024-02-092024-02-09South Texas (Austin and San Antonio regions)West Groupbusiness_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Sale of South Texas cement business and 20 ready mixed concrete plants to CRH for $2.1 billion cash; no headcount removed disclosed.
2024-09-30acquisition_additioncompleted2024-10-252024-10-25South FloridaEast Groupsubsequent_events
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Aggregates bolt-on acquisition completed after quarter end; no headcount added disclosed.
2024-06-30acquisition_additioncompleted2024-04-052024-04-05Alabama, South Carolina, South Florida, Tennessee, VirginiaEast Group — Aggregatesbusiness_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Acquisition of 20 active aggregates operations from Blue Water Industries LLC affiliates for $2.05 billion cash; no headcount disclosed.
2024-06-30acquisition_additioncompleted2024-01-122024-01-12ColoradoWest Group — Aggregatesbusiness_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Acquisition of Albert Frei & Sons, Inc.; closed in Q1 2024 but disclosed in this filing; no headcount disclosed.
2024-06-30divestiture_reductioncompleted2024-02-092024-02-09South Texas (Austin and San Antonio regions)West Group — Cement and Ready Mixed Concretebusiness_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Sale of South Texas cement business and 20 ready mixed concrete plants to CRH for $2.1 billion; $1.3 billion pretax gain; no headcount disclosed.
2024-06-30acquisition_additioncompleted2024-01-12ColoradoWest Groupbusiness_combinations_footnote
f5-10q / Qwen3.6-27B-Q8_0		Acquired Albert Frei & Sons, Inc. (AFS), a leading aggregates producer. Headcount not disclosed.
2024-06-30acquisition_additioncompleted2024-04-05Alabama, South Carolina, South Florida, Tennessee, VirginiaEast Groupbusiness_combinations_footnote
f5-10q / Qwen3.6-27B-Q8_0		Acquired 20 active aggregates operations from Blue Water Industries LLC. Headcount not disclosed.
2024-06-30divestiture_reductioncompleted2024-02-09TexasWest Groupbusiness_combinations_footnote
f5-10q / Qwen3.6-27B-Q8_0		Sold South Texas cement business and related ready mixed concrete operations to CRH Americas Materials. Headcount not disclosed.
2023-12-31divestiture_reductioncompleted2023-11-212024-02-09Texas, United States (Austin and San Antonio region)West Group — South Texas cement and ready mixed concretebusiness_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		Sale of the Hunter cement plant, related cement distribution terminals and 20 ready mixed concrete plants to CRH Americas Materials for $2.1 billion cash. Announced November 21, 2023; classified as held for sale at December 31, 2023; closed February 9, 2024 (after fiscal year-end). Employee headcount affected not disclosed.
2023-12-31divestiture_reductioncompleted2023-10-31Tehachapi, California, United StatesWest Group — cement (reported as discontinued operations)USD 26 (millions)business_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		Cement plant sold to UNACEM Corp S.A.A. for $315.0 million cash on October 31, 2023; $26.3 million pretax loss on divestiture recorded in discontinued operations. Headcount not disclosed.
2023-12-31divestiture_reductioncompleted2023-05-03Stockton, California, United StatesWest Group — cement import terminal (reported as discontinued operations)business_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		Cement import terminal divested May 3, 2023 as part of the wind-down of the Lehigh West Region California cement operations. Headcount not disclosed.
2023-12-31acquisition_additioncompleted2024-01-12Colorado, United States (Denver metropolitan area)Aggregatesbusiness_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		Subsequent event: Company wholly acquired Albert Frei & Sons, Inc., an aggregates producer, on January 12, 2024 per Note B (Item 1 states January 16, 2024). Headcount added not disclosed.
2023-12-31acquisition_additionannounced2024-02-112024Alabama, South Carolina, South Florida, Tennessee and Virginia, United StatesAggregatessubsequent_events
f5-10k / GLM-5.3-flash-HTML		Subsequent event: definitive agreement dated February 11, 2024 to acquire 20 active aggregates operations from affiliates of Blue Water Industries LLC (BWI Southeast) for $2.05 billion cash; expected to close during 2024 subject to regulatory approvals. Headcount not disclosed.
2023-12-31divestiture_reductioncompleted2023-10-31California, United StatesWest Group — CementUSD 26 (millions)discontinued_operations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Sale of Tehachapi, California cement plant for $315.0 million cash; $26.3 million pretax loss on divestiture recorded in discontinued operations. Headcount not disclosed.
2023-12-31divestiture_reductioncompleted2023-05-03California, United StatesWest Group — Cementdiscontinued_operations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Divestiture of Stockton, California cement import terminal. Headcount not disclosed.
2023-12-31divestiture_reductioncompleted2023-11-212024-02-09South Texas, United StatesWest Group — Cement and Ready Mixed Concretesubsequent_events
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Sale of South Texas cement business (Hunter plant), related terminals, and 20 ready mixed concrete plants to CRH Americas Materials for $2.1 billion cash; closed February 9, 2024, after fiscal year-end. Classified as assets held for sale at December 31, 2023. Headcount not disclosed.
2023-12-31acquisition_additioncompleted2024-01-16Colorado, United StatesWest Group — Aggregatesbusiness_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Acquisition of Albert Frei & Sons, Inc., a Colorado aggregates producer, completed January 16, 2024, after fiscal year-end. Headcount not disclosed.
2023-12-31acquisition_additionannounced2024-02-11Alabama, South Carolina, South Florida, Tennessee, Virginia, United StatesEast Group — AggregatesUSD 2,050 (millions)subsequent_events
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Definitive agreement to acquire 20 active aggregates operations from Blue Water Industries LLC affiliates for $2.05 billion cash; expected to close during 2024 subject to regulatory approvals. Headcount not disclosed.
2023-06-30divestiture_reductioncompleted2023-05-032023-05-03California, United StatesWest Group — Cement (discontinued operations)other
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Divestiture of the Stockton, California cement import terminal; filing discloses no associated headcount impact. Related: agreement to sell the Tehachapi, California cement plant was terminated April 26, 2023 (FTC approval not obtained); plant remains held for sale with no workforce figures disclosed.
2022-12-31divestiture_reductioncompleted2022-04-012022-04-01Colorado and Central Texas, United StatesWest Group — ready mixed concreteItem_1_Business
f5-10k / GLM-5.3-flash-HTML		Divested Colorado and Central Texas ready mixed concrete operations to Smyrna Ready Mix Concrete LLC effective April 1, 2022; generated a $151.9 million pretax gain, inclusive of divestiture expenses. Employee headcount affected not disclosed.
2022-12-31divestiture_reductioncompleted2022-06-302022-06-30Redding, California, United StatesWest Group — cement and ready mixed concrete (discontinued operations)discontinued_operations_footnote
f5-10k / GLM-5.3-flash-HTML		Sold the Redding cement plant, related cement distribution terminals and 14 California ready mix operations for $235.0 million in cash; assets originated in the 2021 Lehigh West Region acquisition. A joint-venture interest in a cement distribution terminal was separately sold on July 15, 2022 for $15.0 million. Employee headcount affected not disclosed.
2022-12-31divestiture_reductionannounced2022-08-09Tehachapi, California, United StatesWest Group — cement (discontinued operations)discontinued_operations_footnote
f5-10k / GLM-5.3-flash-HTML		Definitive agreement to sell the Tehachapi cement plant and related distribution terminals for $350.0 million in cash; subject to regulatory approval and customary closing conditions and still pending at fiscal year-end, when the assets were classified as held for sale and reported as discontinued operations. Employee headcount affected not disclosed.
2022-12-31divestiture_reductioncompleted2022-04-012022-04-01Colorado and Central TexasReady mixed concrete operations (West Group)discontinued_operations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Divestiture of Colorado and Central Texas ready mixed concrete operations to Smyrna Ready Mix Concrete LLC; pretax gain of $151.9 million. Headcount not disclosed.
2022-12-31divestiture_reductioncompleted2022-06-302022-06-30CaliforniaCement plant and ready mix operations (West Group)discontinued_operations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Sale of Redding, California cement plant, related distribution terminals and 14 California ready mix operations for $235.0 million cash. Headcount not disclosed.
2022-12-31divestiture_reductionannounced2022-08-09CaliforniaCement plant and distribution terminals (West Group)discontinued_operations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Definitive agreement to sell Tehachapi, California cement plant and related distribution terminals for $350.0 million cash, subject to regulatory approval; pending at fiscal year-end. Headcount not disclosed.
2022-06-30divestiture_reductioncompleted2022-04-01Colorado and Central TexasWest Group — ready mixed concrete operationsbusiness_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Divestiture to Smyrna Ready Mix Concrete LLC completed April 1, 2022; resulted in a pretax gain of $151.7 million (a gain, not a severance charge). No employee counts disclosed; announcement date not stated in filing.
2022-06-30divestiture_reductioncompleted2022-06-30California (Redding)West Group — cement plant, cement distribution terminals and 14 ready mix operationsbusiness_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Sale completed June 30, 2022 for $235 million cash; separate agreement to sell a $15 million joint-venture interest in a cement distribution terminal. No employee counts disclosed.
2022-06-30divestiture_reductionannouncedCaliforniaWest Group — Tehachapi cement plant, remaining California ready mix plants, cement distribution terminals and certain investment propertiesbusiness_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Classified as assets and liabilities held for sale at June 30, 2022, indicating intent to divest; no buyer, completion date, or employee counts disclosed.
2021-12-31acquisition_additioncompleted2021-10-012021-10-01California, Arizona, Nevada, OregonWest Groupbusiness_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		Completed October 1, 2021 for $2.28 billion cash; added 17 aggregates quarries, two cement plants with distribution terminals, and downstream operations. Employee headcount added was not disclosed; date shown is the completion date.
2021-12-31acquisition_additioncompleted2021-07-302021-07-30Houston, TexasWest Groupbusiness_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		Assets of a leading Houston-area recycled concrete producer acquired July 30, 2021. Employee headcount added was not disclosed; date shown is the completion date.
2021-12-31acquisition_additioncompleted2021-04-302021-04-30Minneapolis/St. Paul, MinnesotaEast Groupbusiness_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		Aggregates and hot mix asphalt supplier acquired April 30, 2021, financed with cash and credit facilities. Employee headcount added was not disclosed; date shown is the completion date.
2021-12-31acquisition_additioncompleted2021-10-012021-10-01California, Arizona, Nevada, Oregon (United States)West Group — Building Materials businessUSD 2,280 (millions)business_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Acquired for $2.28 billion in cash; 17 active aggregates quarries, two cement plants with distribution terminals, and targeted downstream operations. Headcount added not disclosed. Purchase price shown for context, not a severance charge.
2021-12-31acquisition_additioncompleted2021-07-302021-07-30Houston, Texas (United States)West Group — Building Materials businessbusiness_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Acquired assets of Southern Crushed Concrete, a recycled concrete producer. Headcount added not disclosed.
2021-12-31acquisition_additioncompleted2021-04-302021-04-30Minneapolis/St. Paul, Minnesota (United States)East Group — Building Materials businessbusiness_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Acquired Tiller Corporation, an aggregates and hot mix asphalt supplier. Headcount added not disclosed.
2021-12-31divestiture_reductionannounced2021-12-31California (United States)West Group — cement and ready mixed concrete operationsdiscontinued_operations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Cement plants (Redding, Tehachapi), distribution terminals, and California ready mixed concrete operations acquired with Lehigh West Region classified as assets held for sale and discontinued operations at December 31, 2021; planned disposal. Headcount not disclosed.
2021-09-30acquisition_additioncompleted2021-04-30Minneapolis/St. Paul regionAggregates and AsphaltMD&A
f5-10q / Qwen3.6-27B-Q8_0		Completed acquisition of Tiller, a leading aggregates and hot mix asphalt supplier. Headcount not disclosed.
2021-09-30acquisition_additioncompleted2021-07-30Houston areaAggregatesMD&A
f5-10q / Qwen3.6-27B-Q8_0		Completed acquisition of assets of SCC, a leading producer of recycled concrete. Headcount not disclosed.
2021-03-31acquisition_additioncompleted2021-04-302021-04-30Minneapolis/St. Paul region, United StatesBuilding Materials — East Group (aggregates and hot mix asphalt)subsequent_events
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Tiller Corporation acquisition completed April 30, 2021, financed with cash and credit facility borrowings; no headcount disclosed.
2020-12-31acquisition_additioncompleted2020-082020-08Dallas/Fort Worth, TexasWest Group — aggregates (sand and gravel) and ready mixed concretebusiness_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		Acquired certain assets including a sand and gravel plant and four ready mixed concrete operations; headcount added not disclosed. Cash paid for acquisitions in 2020 was $65.1 million per MD&A/cash flow statement.
2020-12-31divestiture_reductioncompleted2020-012020-01Arkansas, Louisiana and eastern TexasSouthwest Division — ready mixed concrete (ArkLaTex business)MD&A
f5-10k / GLM-5.3-flash-HTML		Ready mixed concrete business divested in January 2020; headcount removed not disclosed.
2020-12-31othercompleted22020-07-012020-07-01United StatesBuilding Materials business — consolidation of operational management into East, Central, Southwest and West divisionsother
f5-10k / GLM-5.3-flash-HTML		Organizational changes effective July 1, 2020 combined operating divisions; made in connection with retirement of two senior executives at the end of the second quarter of 2020.
2020-12-31acquisition_additioncompleted2020-08-01Texas (Dallas/Fort Worth)West Group — ready mixed concrete and aggregatesUSD 65 (millions)business_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		August 2020 acquisition of a sand and gravel plant and four ready mixed concrete operations; cash paid of $65.1 million. Headcount added not disclosed; impact deemed not material to operating results.
2020-12-31divestiture_reductioncompleted2020-01-01Arkansas, Louisiana and eastern Texas (ArkLaTex)West Group — ready mixed concreteMD&A
f5-10k / MiMo-V2.6-Flash-fp8-HTML		ArkLaTex ready mix business divested in January 2020; headcount removed not disclosed.
2020-06-30restructuringannounced2020-06-302020-07-01United StatesBuilding Materials — East Division and Southwest Division (organizational consolidation)subsequent_events
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Effective July 1, 2020, organizational changes consolidated operational management and divisions following the retirement of two senior executives; Mid-Atlantic and Southeast Divisions combined into East Division, Southwest Aggregates and Cement/Southwest Ready Mix Divisions combined into Southwest Division. No employee counts or charges disclosed.
2019-12-31restructuringcompleted2018-09-302018-12-31SouthwestWest Group - Ready Mixed ConcreteUSD 19 (millions)MD&A
f5-10k / Qwen3.6-27B-Q8_0		Asset and portfolio rationalization charge relating to Southwest ready mixed concrete operations, reflecting evaluation of recoverability of long-lived assets and reduction in headcount. Charge occurred in 2018.
2018-12-31restructuringcompletedUnited States (Southwest: Texas, Arkansas, Louisiana)West Group - ready mixed concrete product lineUSD 19 (millions)MD&A
f5-10k / GLM-5.3-flash-HTML		Asset and portfolio rationalization charge for underperforming Southwest ready mixed concrete operations, comprising impairment of long-lived assets and a reduction in workforce. $16.97 million noncash; $1.868 million to be settled in cash. Charge recognized in the third and fourth quarters of 2018; affected headcount not disclosed.
2018-12-31acquisition_additioncompleted2018-04-27United States - Georgia, South Carolina, Tennessee, Maryland, Kentucky, PennsylvaniaMid-America Group and Southeast Group (aggregates)business_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		Acquisition of Bluegrass Materials Company, the largest privately held pure-play aggregates business in the U.S., for $1.617 billion in cash covering 22 active sites. Employee headcount added through the transaction is not disclosed.
2018-12-31divestiture_reductioncompletedGeorgia, United StatesBuilding Materials - aggregates (heritage Martin Marietta operations)business_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		Divestiture of the heritage Forsyth aggregates quarry north of Atlanta, Georgia, required under the DOJ agreement resolving competition issues for the Bluegrass acquisition; pretax gain of $14.8 million recorded in acquisition-related expenses, net. Employee headcount impact not disclosed.
2018-12-31divestiture_reductioncompletedMaryland, United StatesBuilding Materials - aggregates (legacy Bluegrass operations)business_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		Divestiture of the legacy Bluegrass Beaver Creek aggregates quarry in western Maryland, also required under the DOJ agreement; no gain or loss recognized. Employee headcount impact not disclosed.
2018-12-31acquisition_additioncompleted2018-04-272018-04-27Georgia, South Carolina, Tennessee, Maryland, Kentucky, PennsylvaniaMid-America Group and Southeast Group (aggregates)business_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Acquisition of Bluegrass, 22 active sites, closed April 27, 2018; headcount added not disclosed. Integration completed during 2018 with synergies surpassing the $15 million run-rate target.
2018-12-31restructuringcompletedSouthwestern United States (Texas region)West Group — Southwest ready mixed concrete operationsUSD 19 (millions)restructuring_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Asset and portfolio rationalization charge for underperforming Southwest ready mixed concrete operations, including a reduction in workforce; $16.970 million noncash and $1.868 million to be settled in cash. Employees affected not disclosed.
2018-12-31divestiture_reductioncompleted2018-04-272018-04-27Georgia and MarylandAggregates — Forsyth and Beaver Creek quarriesbusiness_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Divestiture of the heritage Forsyth quarry and legacy Bluegrass Beaver Creek quarry required by the DOJ as a condition of the Bluegrass acquisition; headcount removed not disclosed.
2018-12-31restructuringcompleted2018-12-312018-12-31SouthwestWest Group - Ready Mixed ConcreteUSD 19 (millions)MD&A
f5-10k / Qwen3.6-27B-Q8_0		Asset and portfolio rationalization charge reflecting evaluation of recoverability of long-lived assets and reduction in workforce. $16.97M noncash, $1.868M cash.
2018-09-30restructuringin_progressSouthwest United StatesWest Group — ready mixed concrete operationsUSD 7 (millions)other
f5-10q / GLM-5.3-flash-fp4-HTML		Third-quarter restructuring charge primarily asset impairments and severance in Southwest ready mixed concrete operations; no employee count disclosed.
2018-09-30restructuringin_progressSouthwest United StatesWest Group — ready mixed concrete operationsUSD 7 (millions)restructuring_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Q3 2018 restructuring charge primarily for asset impairment and severance in Southwest ready mixed concrete operations; no employee count disclosed
2018-09-30acquisition_additioncompleted2018-04-272018-04-27Georgia, South Carolina, Tennessee, Maryland, Kentucky, PennsylvaniaMid-America Group and Southeast Group — aggregatesbusiness_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Bluegrass Materials Company acquisition completed April 27, 2018 for $1.617B; 23 active sites acquired; no headcount figure disclosed
2018-09-30divestiture_reductioncompleted2018-04-272018-04-27Forsyth, Georgia and western MarylandMid-America Group and Southeast Group — aggregatesbusiness_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		DOJ-required divestiture of Forsyth and Beaver Creek quarries in connection with Bluegrass acquisition; no headcount figure disclosed
2018-09-30restructuringcompletedSouthwestReady mixed concreteUSD 7 (millions)MD&A
f5-10q / Qwen3.6-27B-Q8_0		Includes asset impairment charges and severance costs. Employee count not disclosed.
2018-09-30restructuringin_progressOther Operating Income Expense [Member]USD 7,113,000 (absolute)restructuring_footnote
f5-10q / no-ai-xblr
2018-03-31acquisition_additioncompleted2018-04-272018-04-27Georgia, South Carolina, Tennessee, Maryland, Kentucky, Pennsylvania (United States)Building Materials — AggregatesUSD 1,625 (millions)subsequent_events
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Acquisition of Bluegrass Materials Company for $1.625 billion cash; 23 active sites. Employee headcount added not disclosed. Company expects ~$15 million annual synergies within 12 months.
2017-12-31acquisition_additionannounced2017-06-262018-06Maryland, Georgia, South Carolina, Kentucky, Tennessee, PennsylvaniaBuilding Materials — aggregatesUSD 1,625 (millions)business_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		Pending $1.625 billion cash acquisition of Bluegrass Materials Company (largest privately held pure-play aggregates business, 23 active sites); expected to close in first half of 2018 pending DOJ review. Headcount to be added not disclosed; charge shown is purchase consideration, not a workforce charge.
2017-12-31acquisition_additionannounced2017-06-262018-06-30Maryland, Georgia, South Carolina, Kentucky, Tennessee, PennsylvaniaBuilding Materials (aggregates)USD 1,625 (millions)business_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Definitive agreement to acquire Bluegrass Materials Company for $1.625 billion in cash; 23 active sites. Parties anticipated completion in first half of 2018. Headcount not disclosed. Acquisition-related expenses of $8.638 million incurred in 2017.
2017-06-30othercompleted2017-06-30CorporateUSD 6 (millions)MD&A
f5-10q / Qwen3.6-27B-Q8_0		Expense related to the pending retirement of the Chief Financial Officer, including accelerated recognition of stock-based compensation.
2017-06-30acquisition_additionannounced2017-06-262017-12-31Georgia, South Carolina, Tennessee, Maryland, KentuckyBuilding MaterialsUSD 1,625 (millions)MD&A
f5-10q / Qwen3.6-27B-Q8_0		Definitive agreement to acquire Bluegrass Materials Company for $1.625 billion. Headcount not disclosed.
2016-12-31acquisition_additioncompleted573United States (Colorado and Texas)West GroupMD&A
f5-10k / GLM-5.3-flash-HTML		Filer states 573 employees were added during 2016 as a result of acquisitions (comparatives: 37 in 2015, 2,224 in 2014). The 2016 acquisitions were Rocky Mountain Materials and Asphalt, Inc. and Rocky Mountain Premix, Inc. (Q1 2016, Colorado) and the remaining interest in Ratliff Ready-Mix, L.P. (Q3 2016, central Texas); both are reported in the West Group per Note C.
2016-12-31acquisition_additioncompleted573United StatesAggregates business (West Group)MD&A
f5-10k / MiMo-V2.6-Flash-fp8-HTML		573 employees added during 2016 as a result of acquisitions, principally the Rocky Mountain Materials and Asphalt and Ratliff Ready-Mix transactions.
2016-12-31acquisition_additioncompleted5732016-12-312016-12-31United StatesVariousMD&A
f5-10k / Qwen3.6-27B-Q8_0		573 employees added during 2016 as a result of acquisitions, including Rocky Mountain Materials and Ratliff Ready-Mix.
2016-12-31divestiture_reductioncompleted2016-12-312016-12-31United StatesAggregatesItem 1. Business
f5-10k / Qwen3.6-27B-Q8_0		Company disposed of or idled underperforming operations between 2001 and 2016, including aggregates and asphalt operations. Specific headcount for 2016 divestitures not disclosed.
2016-09-30acquisition_additioncompleted2016-01-01Colorado, United StatesWest Group — Aggregates, Asphalt, Ready Mixed Concretebusiness_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Acquisition of Rocky Mountain Materials and Asphalt, Inc. and Rocky Mountain Premix Inc. in Q1 2016; includes four aggregates plants, two asphalt plants, two ready mixed concrete operations. Headcount added not disclosed.
2016-09-30acquisition_additioncompleted2016-07-01Texas, United StatesWest Group — Ready Mixed Concretebusiness_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Acquired remaining 60% interest in Ratliff Ready-Mix, L.P. during Q3 2016; previously held 40% equity-method stake. Headcount added not disclosed.
2016-09-30acquisition_additioncompleted2016-03-31ColoradoWest Groupbusiness_combinations_footnote
f5-10q / Qwen3.6-27B-Q8_0		Acquired outstanding stock of Rocky Mountain Materials and Asphalt, Inc., and Rocky Mountain Premix Inc. in Q1 2016. Headcount not disclosed.
2016-09-30acquisition_additioncompleted2016-09-30TexasWest Groupbusiness_combinations_footnote
f5-10q / Qwen3.6-27B-Q8_0		Acquired remaining interest in Ratliff Ready-Mix, L.P. in Q3 2016. Headcount not disclosed.
2016-06-30acquisition_additioncompleted2016-01-01Colorado (Front Range of the Rocky Mountains)Aggregates Business — West GroupUSD 123 (millions)business_combinations_footnote
f5-10q / GLM-5.3-flash-fp4-HTML		First-quarter 2016 acquisition of Rocky Mountain Materials and Asphalt, Inc. and Rocky Mountain Premix Inc.; adds four aggregates plants, two asphalt plants and two ready mixed concrete operations. Headcount added not disclosed.
2016-06-30acquisition_additioncompleted2016-03-31ColoradoAggregates Business - West Groupbusiness_combinations_footnote
f5-10q / Qwen3.6-27B-Q8_0		Acquired outstanding stock of Rocky Mountain Materials and Asphalt, Inc., and Rocky Mountain Premix Inc. in Q1 2016. Acquisition includes four aggregates plants, two asphalt plants, and two ready mixed concrete operations. Headcount not explicitly disclosed.
2016-03-31acquisition_additioncompletedColorado (Front Range)Aggregates Business — West GroupUSD 123 (millions)business_combinations_footnote
f5-10q / GLM-5.3-flash-fp4-HTML		Acquired outstanding stock of Rocky Mountain Materials and Asphalt, Inc. and Rocky Mountain Premix Inc. during Q1 2016; adds four aggregates plants, two asphalt plants and two ready mixed concrete operations. Headcount added not disclosed.
2015-12-31divestiture_reductioncompleted2015-09-30California, United StatesCementbusiness_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		All California cement operations (a cement plant, two distribution terminals, mobile equipment, intangible assets and inventory) sold effective September 30, 2015. The Company recognized a $24.2 million loss on the sale plus $4.8 million of other disposal-related expenses; no affected-employee headcount was disclosed.
2015-12-31divestiture_reductioncompleted2015-12-31San Antonio, Texas, United StatesAggregates business — asphalt product lineMD&A
f5-10k / GLM-5.3-flash-HTML		Non-core asphalt operations in San Antonio divested in the fourth quarter of 2015, with a $13.1 million gain recognized; no affected-employee headcount was disclosed.
2015-12-31acquisition_additioncompleted2015Aggregates business (Mid-America and West Groups)Item_1_Business
f5-10k / GLM-5.3-flash-HTML		Three smaller acquisitions completed during 2015, comprising three aggregates operations and related assets; cash paid for acquisitions in 2015 totaled $43.2 million. No employee headcount added was disclosed.
2015-12-31divestiture_reductioncompleted2015-09-302015-09-30California, United StatesCementdiscontinued_operations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Sale of California cement operations (plant, two distribution terminals, mobile equipment, intangibles, inventory) for $420 million proceeds with a $24.2 million loss plus $4.8 million other disposal-related expenses. Headcount not disclosed.
2015-12-31divestiture_reductioncompleted2015-12-31San Antonio, Texas, United StatesAggregates — asphalt operationsItem_1_Business
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Non-core asphalt operations in San Antonio sold during 2015 (fourth quarter); a $13.1 million gain on sale was recognized. Headcount not disclosed.
2015-12-31acquisition_additioncompleted2015-12-31United StatesAggregatesItem_1_Business
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Three smaller acquisitions comprising three aggregate operations and related assets; $43.2 million cash paid for acquisitions in 2015. Headcount added not disclosed.
2015-12-31restructuringcompleted2015-06-30United StatesEnterprise — Texas Industries, Inc. (TXI) integrationMD&A
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Integration of the July 2014 TXI acquisition completed as of June 30, 2015, ahead of schedule, with synergies raised to $120 million per year. Acquisition and integration expenses of $6.8 million were incurred in 2015 (versus $90.5 million in 2014). Employees affected not disclosed.
2015-09-30divestiture_reductioncompleted2015-09-30California, United StatesCement segmentUSD 25 (millions)business_combinations_footnote
f5-10q / GLM-5.3-flash-fp4-HTML		Sold California cement operations (cement plant, two distribution terminals, mobile equipment, intangibles, inventory) to CalPortland for $420 million; recognized a $25.1 million loss plus $4.8 million of related disposal expenses. Employee headcount affected by the divestiture is not disclosed.
2015-09-30divestiture_reductioncompleted2015-09-302015-09-30California, United StatesCementrestructuring_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Sale of California cement operations to CalPortland for $420 million; no employee count disclosed. Related loss of $25.1 million and $4.8 million disposal expenses are asset-related, not severance.
2015-09-30otherin_progressUnited StatesCorporate / enterprise-wideMD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Cash-flow discussion attributes the decline in accrued salaries, benefits and payroll taxes during 2015 primarily to payments of severance expense; no employee count or charge amount disclosed.
2015-09-30divestiture_reductioncompleted2015-09-302015-09-30CaliforniaCementUSD 29 (millions)business_combinations_footnote
f5-10q / Qwen3.6-27B-Q8_0		Sale of California cement operations resulted in a $25.1 million loss and $3.6 million in related expenses. Employee count not disclosed.
2015-06-30divestiture_reductionannounced2015-09-30California, United StatesCementMD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Definitive agreement to sell the California cement business (Oro Grande facility) for $420 million; assets classified as held for sale at June 30, 2015. No employee count disclosed.
2014-12-31acquisition_additioncompleted2,0002014-01-272014-07-01Texas, California, Louisiana, Oklahoma, ArkansasCement segment; Aggregates business — West Group (aggregates and ready mixed concrete)USD 90 (millions)business_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		Stock-for-stock merger closed July 1, 2014 (0.7 Company shares per TXI share). Approximately 2,000 employees were added as pension plan participants; total acquired headcount not separately disclosed. Fiscal 2014 business development and acquisition integration expenses of $90,487,000 include severance, comprising an $11,444,000 increase in the TXI-related severance accrual and a $13,652,000 change-in-control termination benefit charge for former TXI executives. Integration of ready mixed concrete and cement operations was expected to continue through June 2015.
2014-12-31divestiture_reductioncompleted2014-07-012014-08-15Oklahoma (North Troy Quarry); Dallas and Frisco, Texas (rail distribution yards)Aggregates businessbusiness_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		Divestiture required by the U.S. Department of Justice in connection with the TXI merger review; completed August 15, 2014 in exchange for cash and real property, generating a $47,804,000 pretax gain. Workforce impact not quantified.
2014-12-31divestiture_reductioncompleted20142014Arkansas; east TexasAggregates business — road paving operationsItem_1_Business
f5-10k / GLM-5.3-flash-HTML		Underperforming road paving operations disposed of during 2014 to redeploy capital; workforce impact not quantified.
2014-12-31acquisition_additioncompleted2014-07-012014-07-01United States (Texas, California, Louisiana, Arkansas)Cement, Aggregates (West Group), Ready Mixed Concretebusiness_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		TXI acquisition completed July 1, 2014; headcount added not separately quantified. Approximately 2,000 employees added as participants in the Corporation's pension plans (Note J).
2014-12-31divestiture_reductioncompleted2014-08-152014-08-15Oklahoma, TexasAggregates (West Group)business_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		DOJ-required divestiture of North Troy Quarry (Oklahoma) and two rail distribution yards (Dallas and Frisco, Texas); headcount affected not disclosed.
2014-12-31divestiture_reductioncompleted2014-12-31Arkansas, TexasAggregates — road paving operationsItem_1_Business
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Disposed of certain underperforming road paving operations in Arkansas and east Texas during 2014; headcount affected not disclosed.
2014-12-31othercompleted2014-12-31United StatesCement segmentUSD 13 (millions)MD&A
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Cement plant kiln shutdown costs of $13.3 million incurred in second half of 2014; headcount impact not disclosed.
2014-12-31acquisition_additioncompleted2,0002014-07-012014-07-01United StatesPension Plansrestructuring_footnote
f5-10k / Qwen3.6-27B-Q8_0		Approximately 2,000 employees added as participants in pension plans effective with TXI acquisition.
2014-12-31restructuringcompleted2014-07-012014-12-31United StatesTXI AcquisitionUSD 90 (millions)business_combinations_footnote
f5-10k / Qwen3.6-27B-Q8_0		Business development and acquisition integration expenses, inclusive of severance costs.
2014-09-30acquisition_additioncompleted2014-01-272014-07-01United States (Texas, Louisiana, Arkansas, California)Cement, Aggregates (West Group), Ready Mixed Concretebusiness_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		TXI merger completed 2014-07-01; acquired 3 cement plants, 8 cement terminals, ~120 ready mixed concrete plants, 9 quarries, 6 distribution terminals. No employee headcount disclosed.
2014-09-30divestiture_reductioncompleted2014-08-15Oklahoma, TexasAggregates (West Group)business_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		DOJ-required divestiture of one aggregates quarry in Oklahoma and two rail yards in Texas; no employee count disclosed.
2014-09-30acquisition_additioncompleted2014-07-01United StatesCement; Aggregatesbusiness_combinations_footnote
f5-10q / Qwen3.6-27B-Q8_0		Acquisition of Texas Industries, Inc. (TXI) completed on July 1, 2014. Specific headcount added is not disclosed in the filing.
2014-09-30divestiture_reductioncompleted2014-08-15Oklahoma; TexasAggregatesbusiness_combinations_footnote
f5-10q / Qwen3.6-27B-Q8_0		Divestiture of a corporate-owned aggregates quarry in Oklahoma and two rail yards in Texas to comply with DOJ requirements. Specific headcount removed is not disclosed.
2014-06-30acquisition_additioncompleted2014-01-272014-07-01United States (Texas, California)Aggregates business (cement, aggregates, ready mixed concrete)subsequent_events
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Merger with Texas Industries, Inc. closed July 1, 2014 (subsequent to quarter end); approximately 20,300,000 shares issued. No employee headcount added disclosed. Business development expenses of $12,781,000 and acquisition integration expenses of $2,210,000 incurred for the six months ended June 30, 2014.
2014-06-30divestiture_reductionannounced2014-06-27Oklahoma and Texas, United StatesAggregates businesssubsequent_events
f5-10q / MiMo-V2.6-Flash-fp8-HTML		DOJ-required divestiture of one aggregates quarry in Oklahoma and two rail yards in Texas as condition of TXI merger review; assets held for sale at June 30, 2014. No headcount associated with divested assets disclosed.
2013-12-31divestiture_reductioncompletedAggregates businessdiscontinued_operations_footnote
f5-10k / GLM-5.3-flash-HTML		During 2013 the Company divested and permanently closed additional underperforming Aggregates operations, reported as discontinued operations (FY2013 discontinued-operations net sales of $3.1 million; pretax loss on disposals of $82 thousand). Employee counts affected were not disclosed.
2013-12-31acquisition_additioncompleted2013-07-01Greater Atlanta, GeorgiaAggregates business (Southeast Group)business_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Acquisition of three aggregates quarries providing over 800 million tons of permitted reserves; headcount added not disclosed. Cash paid for 2013 acquisitions was $64.5 million (includes an Iowa aggregates site).
2013-12-31acquisition_additioncompleted2013-01-01IowaAggregates business (Mid-America Group)business_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Acquisition of an aggregates site in Iowa during 2013; headcount added not disclosed.
2013-12-31divestiture_reductioncompletedUnited StatesAggregates businessdiscontinued_operations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Divestitures and permanent closures of underperforming operations treated as discontinued operations; headcount removed not disclosed. Company stated it will continue evaluating divestitures of underperforming assets during 2014.
2013-06-30acquisition_additionannounced2013-07-012013-07-01Greater Atlanta, Georgia, United StatesSoutheast Group — AggregatesUSD 62 (millions)subsequent_events
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Acquisition of three aggregates quarries for $62.0 million; adds over 800 million tons of reserves. No employee headcount associated with the transaction is disclosed.
2012-12-31acquisition_additioncompleted4632011-12Colorado and Texas (Denver metropolitan area and San Antonio)Aggregates business (vertically-integrated operations)Item_1_Business
f5-10k / GLM-5.3-flash-HTML		Filer discloses a net increase of 463 employees added directly related to acquisitions completed in 2011, primarily the December 2011 Denver, Colorado and San Antonio, Texas vertically-integrated operations. Headcount addition occurred with the 2011 acquisitions but is disclosed in this FY2012 10-K Employees section.
2012-12-31voluntary_separationcompletedCorporation-wideUSD 4 (millions)other
f5-10k / GLM-5.3-flash-HTML		Early retirement and severance expenses of $3,885,000 incurred in 2012, reducing net earnings by $0.05 per diluted share; included in selling, general and administrative expenses. Number of employees affected not disclosed. MD&A references the same costs as $3.9 million.
2012-12-31plant_closurein_progressAggregates businessother
f5-10k / GLM-5.3-flash-HTML		Filer states it has reduced operating hours at a number of facilities, closed some facilities, and temporarily idled others in response to reduced construction demand; in 2012 the Aggregates business operated significantly below capacity, restricting capitalization of $50.9 million of costs. No employee counts, closure dates, or charges quantified; temporary idling described as potentially continuing if demand does not improve.
2012-12-31restructuringcompletedUnited StatesCorporateUSD 4 (millions)other
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Early retirement and severance costs of $3.9 million ($0.05 per diluted share) incurred in 2012, recorded in SG&A; no employee count disclosed.
2012-12-31acquisition_additioncompleted4632011-12-31United StatesAggregatesItem_1_Business
f5-10k / Qwen3.6-27B-Q8_0		Net increase of 463 employees directly related to acquisitions completed in 2011, disclosed in the 2012 10-K context.
2012-12-31restructuringcompleted2012-12-31United StatesCorporateUSD 4 (millions)MD&A
f5-10k / Qwen3.6-27B-Q8_0		Early retirement and severance expenses of $3.9 million incurred in 2012. Employee count not explicitly disclosed.
2011-12-31acquisition_additioncompleted463Texas and Colorado, United StatesAggregates business (West Group); Specialty Products not implicatedItem_1_Business
f5-10k / GLM-5.3-flash-HTML		Net increase of approximately 463 employees directly related to acquisitions completed in 2011 (San Antonio, TX in June 2011; Lafarge asset exchange and Denver ready mix acquisition in December 2011). MD&A separately cites approximately 450 additional employees netted via the Lafarge exchange; the Item 1 figure is the comprehensive total.
2011-12-31restructuringcompletedCorporate (recorded in selling, general and administrative expenses)USD 4 (millions)restructuring_footnote
f5-10k / GLM-5.3-flash-HTML		Nonrecurring early retirement and severance expenses totaling $4,414,000 ($0.06 per diluted share) incurred during 2011; MD&A describes these as termination costs for certain restructuring activities. Headcount affected was not disclosed. Presented as one consolidated charge, so a single record is emitted.
2011-12-31acquisition_additioncompleted4632011-12-312011-12-31United StatesAggregatesItem_1_Business
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Net increase of approximately 463 employees from all 2011 acquisitions (San Antonio, Denver/Lafarge exchange, Denver ready mix). Includes ~450 netted from the Lafarge asset exchange per MD&A.
2011-12-31divestiture_reductioncompleted2011-12-092011-12-09United States — Mississippi River corridorAggregates — River District Operationsdiscontinued_operations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		River District Operations divested as part of asset exchange with Lafarge; headcount removed not disclosed.
2011-12-31voluntary_separationcompleted2011-12-31United StatesCorporate / multipleUSD 4 (millions)other
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Early retirement and severance expenses of $4.414M incurred during 2011; employee count not disclosed.
2011-12-31acquisition_additioncompleted4632011-12-312011-12-31United StatesAggregatesItem_1_Business
f5-10k / Qwen3.6-27B-Q8_0		Net increase of approx 463 employees directly related to acquisitions completed in 2011.
2011-12-31restructuringcompleted2011-12-312011-12-31United StatesCorporateUSD 4 (millions)MD&A
f5-10k / Qwen3.6-27B-Q8_0		Early retirement and severance expenses totaling $4.4 million incurred in 2011.
2011-09-30voluntary_separationcompletedUnited StatesCorporateUSD 2,825 (thousands)MD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Nonrecurring early retirement benefit recorded in Q3 2011 SG&A; pretax charge of $2,825 thousand, $0.04 per diluted share after tax. Number of participants not disclosed.
2011-09-30acquisition_additioncompletedSan Antonio, Texas, United StatesWest Group (Aggregates)business_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		June 2011 acquisition of construction assets of six aggregates quarries, two ready mixed concrete plants and an asphalt plant; headcount added not disclosed.
2011-09-30voluntary_separationcompletedUSD 2,825 (thousands)MD&A
f5-10q / Qwen3.6-27B-Q8_0		Filer reports a '$2.8 million nonrecurring early retirement benefit' included in selling, general and administrative expenses for the quarter.
2011-06-30acquisition_additioncompleted2011-06-30San Antonio, Texas, United StatesWest Group — Aggregates, Asphalt, Ready Mixed Concretebusiness_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		June 2011 acquisition of construction assets of six aggregates quarries, two ready mixed concrete plants and an asphalt plant; headcount added not disclosed
2010-12-31reduction_in_forcecompleted20082010-12-31USD 5 (millions)other
f5-10k / GLM-5.3-flash-HTML		Q4 2008 cost-structure workforce reduction; $5.4M severance accrued at communication date and charged to 2008 earnings. During 2010 the Company paid $0.8M of remaining severance; no further payments were required after December 31, 2010.
2010-12-31acquisition_additioncompleted2010-02Port Canaveral, Florida, United StatesAggregates businessbusiness_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		Aggregates distribution facility serving the greater Orlando market. Combined 2010 business-combination investment was $43.3M across both deals; per-deal price and acquired headcount not disclosed.
2010-12-31acquisition_additioncompleted2010-10Charlotte, North Carolina region (business located in South Carolina), United StatesAggregates businessbusiness_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		Sand and gravel business serving the Charlotte region and certain South Carolina markets; part of the combined $43.3M 2010 acquisition investment. Headcount not disclosed.
2010-12-31divestiture_reductioncompleted2010Aggregates businessMD&A
f5-10k / GLM-5.3-flash-HTML		Several underperforming Aggregates operations divested during 2010; combined pretax proceeds from divestitures and surplus land/equipment sales totaled $5.0M. Headcount impact not disclosed.
2010-12-31acquisition_additioncompleted2010-02-01United States — FloridaAggregates (Southeast Group)USD 43 (millions)business_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Acquisition of an aggregates distribution facility at Port Canaveral, Florida; part of $43.3 million total 2010 business-combination investment. No headcount disclosed.
2010-12-31acquisition_additioncompleted2010-10-01United States — North Carolina / South CarolinaAggregates (Mideast Group)business_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Acquisition of a sand and gravel business near Charlotte, North Carolina, serving the Charlotte region and certain South Carolina markets. No headcount disclosed.
2010-12-31otherin_progressUnited StatesAggregates businessItem_1_Business
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Facilities temporarily idled and reduced operating hours during the recession; headcount reductions referenced but no affected-employee count disclosed. Related: $52.4 million of costs could not be capitalized in 2010 due to operating well below capacity.
2010-12-31restructuringcompleted2008-Q42010-12-31United StatesCorporateUSD 5 (millions)Note Q - Other Operating Income and Expenses, Net
f5-10k / Qwen3.6-27B-Q8_0		Reduction in workforce announced in Q4 2008. $5.4M accrued. Payments of $0.849M in 2010 and $3.243M in 2009. No further payments required after Dec 31, 2010.
2009-12-31othercompletedOhioAggregates Business — Mideast Groupdiscontinued_operations_footnote
f5-10k / GLM-5.3-flash-HTML		Underperforming operations disposed of or permanently shut down during 2009; results through disposal dates reported in discontinued operations. No employee counts or workforce-specific charges disclosed.
2009-12-31othercompletedGeorgia; KentuckyAggregates Business — Southeast Groupdiscontinued_operations_footnote
f5-10k / GLM-5.3-flash-HTML		Underperforming operations disposed of or permanently shut down during 2009; results through disposal dates reported in discontinued operations. No employee counts or workforce-specific charges disclosed.
2009-12-31othercompletedIowa; KansasAggregates Business — West Groupdiscontinued_operations_footnote
f5-10k / GLM-5.3-flash-HTML		Underperforming operations disposed of or permanently shut down during 2009; results through disposal dates reported in discontinued operations. No employee counts or workforce-specific charges disclosed.
2009-12-31othercompleted6%MD&A
f5-10k / GLM-5.3-flash-HTML		Company-wide headcount reduced 6% during 2009, to approximately 4,600 employees at year-end. Drivers cited include plant automation, mobile fleet right-sizing, and consolidated production 'super crews' at locations not operating at full capacity. Net company-wide figure; components not quantified.
2009-12-31acquisition_additioncompleted2009-06-12Nebraska; Wyoming; UtahAggregates Business — West Groupbusiness_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		Three quarries (Fort Calhoun, NE; Guernsey, WY; Milford, UT) plus the remaining 49% interest in the Granite Canyon, WY joint venture acquired for $65.0 million. No employee count disclosed.
2009-12-31restructuringcompleted2009-12-31United StatesConsolidatedMD&A
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Headcount reduced by 6% during 2009 to approximately 4,600 employees through facility shutdowns, temporary idlings and workforce reductions; no affected-employee count or charge disclosed for the 2009 action. A separate Q4 2008 workforce reduction accrued $5.4 million of severance (prior-year action; $3.2 million paid during 2009).
2009-12-31plant_closurecompleted2009-12-31OhioMideast Groupdiscontinued_operations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Operation disposed of or permanently shut down in 2009; treated as discontinued operations. No employee count disclosed.
2009-12-31plant_closurecompleted2009-12-31Georgia and KentuckySoutheast Groupdiscontinued_operations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Operations disposed of or permanently shut down in 2009; treated as discontinued operations. No employee count disclosed.
2009-12-31plant_closurecompleted2009-12-31Iowa and KansasWest Groupdiscontinued_operations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Operations disposed of or permanently shut down in 2009; treated as discontinued operations. No employee count disclosed.
2009-12-31acquisition_additioncompleted2009-06-122009-06-12Nebraska, Wyoming, UtahWest GroupUSD 65 (millions)business_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Acquisition of three quarries plus remaining 49% interest in Granite Canyon JV from CEMEX, Inc.; purchase price $65 million. No headcount added disclosed.
2009-12-31restructuringcompleted2009United StatesCorporate / AggregatesMD&A
f5-10k / Qwen3.6-27B-Q8_0		Reduction of headcount by 6% to approximately 4,600 employees.
2009-12-31restructuringcompleted2008-10-01United StatesCorporateUSD 5 (millions)restructuring_footnote
f5-10k / Qwen3.6-27B-Q8_0		Termination of certain employees as part of reduction in workforce. Accrued $5.4M in Q4 2008. Paid $3.2M in 2009.
2009-09-30reduction_in_forcein_progressUSD 1,483 (thousands)restructuring_footnote
f5-10q / GLM-5.3-flash-fp4-HTML		Severance accrual established in Q4 2008 for workforce reduction to control cost structure; $661,000 paid in Q3 2009 and $2,722,000 paid YTD; remaining accrual of $1,483,000 at September 30, 2009 expected to be paid within twelve months. Number of employees affected not disclosed.
2009-09-30restructuringin_progress2008-10-01United StatesUSD 1,483 (thousands)other
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Severance accrual from a Q4 2008 workforce reduction; $661K paid in Q3 2009 and $2,722K YTD; $1,483K remaining at 2009-09-30, expected to be paid within twelve months. No employee count disclosed.
2009-09-30acquisition_additioncompleted2009-06-122009-06-12United States (Nebraska, Wyoming, Utah)West Group — AggregatesUSD 65 (millions)business_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Acquisition of three quarries plus remaining 49% interest in Granite Canyon JV from CEMEX, Inc. for $65M; no headcount added disclosed.
2009-09-30restructuringin_progress2008-10-012010-09-30USD 1,483 (thousands)restructuring_footnote
f5-10q / Qwen3.6-27B-Q8_0		Program announced in Q4 2008. Remaining accrual of $1.5M expected to be paid within upcoming twelve months. Employee count not disclosed.
2009-06-30reduction_in_forcein_progress2008-10-01USD 2,061 (thousands)restructuring_footnote
f5-10q / GLM-5.3-flash-fp4-HTML		Severance accrual established in Q4 2008 to control cost structure; $889,000 paid in Q2 2009 and $2,061,000 in the six months ended June 30, 2009; remaining accrual of $2,144,000 at June 30, 2009 expected to be paid within twelve months. Number of employees affected not disclosed.
2009-06-30reduction_in_forcecompleted2008United StatesNot specifiedUSD 2,144 (thousands)restructuring_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Severance accrued in Q4 2008 for employees terminated in a cost-reduction workforce action; no headcount disclosed. Payments of $889 thousand (three months) and $2,061 thousand (six months) made in 2009; $2,144 thousand accrual remained at 2009-06-30, expected to be paid within twelve months. Announcement date known only as Q4 2008.
2009-06-30acquisition_additioncompleted2009-06-12United States (Nebraska, Wyoming, Utah)West Group — Aggregatesbusiness_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Acquisition of three quarries plus remaining 49% interest in Granite Canyon JV from CEMEX for $65 million; no employee headcount added or assumed is disclosed.
2009-06-30restructuringin_progress2008-10-012010-06-30GlobalCorporate and AggregatesUSD 2 (millions)restructuring_footnote
f5-10q / Qwen3.6-27B-Q8_0		Accrual established in Q4 2008 for workforce reduction to control cost structure. $2.144M remaining accrual at June 30, 2009 expected to be paid within 12 months. Employee count not disclosed.
2009-03-31reduction_in_forcein_progressUSD 4,216,000 (thousands)restructuring_footnote
f5-10q / GLM-5.3-flash-fp4-HTML		Severance accrued in Q4 2008 for terminated employees as part of a cost-structure reduction; $1,172,000 paid during Q1 2009, remaining accrual $3,044,000 at March 31, 2009. Employee count not disclosed.
2009-03-31restructuringin_progress2008-10-01United StatesNot specifiedUSD 3 (millions)restructuring_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Reduction in workforce initiated in Q4 2008 to control cost structure; $1,172,000 of severance paid during Q1 2009, leaving a $3,044,000 accrual at 2009-03-31 ($2,526,000 current, $518,000 noncurrent). Number of employees affected not disclosed.
2009-03-31restructuringin_progress2008-10-01USD 1,172 (thousands)restructuring_footnote
f5-10q / Qwen3.6-27B-Q8_0		Accrual established in Q4 2008 for workforce reduction to control cost structure. $1.172M paid in Q1 2009; $3.044M remaining accrual.
2008-12-31reduction_in_forcecompleted2008-12-31Corporate, division and district officesUSD 5 (millions)restructuring_footnote
f5-10k / GLM-5.3-flash-HTML		Certain employees terminated in Q4 2008 under a cost-control reduction-in-workforce plan; severance and other termination benefits of $5.4 million accrued at the communication date, of which approximately $4.2 million payable after December 31, 2008. Plan completed during Q4 2008; full-year 2008 headcount declined 8% to roughly 4,900, reflecting plant automation, right-sizing, the economic downturn and this plan. Terminated-employee count not disclosed.
2008-12-31othercompletedUnited States — Ohio; Tennessee; California; Kansas; Texas; WisconsinAggregates business — Mideast Group (Ohio), Southeast Group (Tennessee), West Group (California, Kansas, Texas, Wisconsin)discontinued_operations_footnote
f5-10k / GLM-5.3-flash-HTML		Under-performing Aggregates operations disposed of or permanently shut down in 2008, reported as discontinued operations; includes the California quarry divested to Vulcan Materials Company in the asset exchange. 2008 discontinued operations had net sales of $3.95 million and a $10.6 million pretax gain on disposals; headcount impact not disclosed.
2008-12-31acquisition_additioncompleted2008-04-11Georgia and Tennessee (plus land parcel at Three Rivers Quarry, Kentucky)Aggregates business — Southeast Groupbusiness_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		Asset exchange with Vulcan Materials Company acquired six quarry locations in Georgia and Tennessee plus a Kentucky land parcel for a $192 million cash payment; acquired operations reported through the Southeast Group. One of three acquisitions completed in 2008; employee headcount added not disclosed.
2008-12-31restructuringcompleted8%2008-10-012008-12-31United StatesCorporate, division and district officesUSD 5 (millions)restructuring_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Fourth quarter 2008 reduction in workforce; approximately $4.174 million payable after December 31, 2008. MD&A reports headcount reduced 8% to approximately 4,900; absolute headcount affected not disclosed
2008-12-31acquisition_additioncompleted2008-04-112008-04-11Georgia and Tennessee, United StatesSoutheast Group — Aggregatesbusiness_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Swap transaction with Vulcan Materials Company acquiring six quarry locations plus a land parcel; headcount added not disclosed
2008-12-31divestiture_reductioncompleted2008-01-012008-12-31Ohio, Tennessee, California, Kansas, Texas and Wisconsin, United StatesMideast, Southeast and West Groups — Aggregatesdiscontinued_operations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Disposal or permanent shutdown of underperforming operations treated as discontinued operations; headcount removed not disclosed
2008-12-31plant_closurein_progress2008-01-01United StatesAggregates businessItem_1_Business
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Temporary shutdowns and reduced operating hours at facilities during the recession; headcount affected not disclosed
2008-12-31reduction_in_forcecompleted2008-10-01United StatesCorporate, Division, and District OfficesUSD 5 (millions)MD&A
f5-10k / Qwen3.6-27B-Q8_0		Reduction in workforce in Q4 2008. Charge of $5.4 million for severance and other termination benefits. Employee count not explicitly disclosed, but total headcount reduced by 8% in 2008.
2008-06-30acquisition_additioncompleted2008-04-112008-04-11North Georgia and Tennessee, USASoutheast Group (Aggregates)business_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Swap transaction with Vulcan Materials acquiring six quarry locations; filing discloses no employee counts associated with the acquisition. Two smaller 2008 acquisitions (ElastoMag product line assets and a granite quarry near Asheboro, NC) are also noted without headcount figures.
2008-06-30divestiture_reductioncompleted2008-04-112008-04-11Oroville, California; San Antonio, Texas; Henderson, North Carolina, USAWest Group and Mideast Group (Aggregates); reported as discontinued operationsbusiness_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Divested to Vulcan as part of the same swap: the company's only California quarry, an idle facility north of San Antonio, and leased land in Henderson, NC. No headcount impact disclosed.
2008-03-31acquisition_additioncompleted2008-04-112008-04-11Georgia and TennesseeAggregates business (Southeast Group)subsequent_events
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Six quarries acquired from Vulcan Materials for $192 million cash plus asset exchange; no employee headcount disclosed for the acquired operations.
2008-03-31divestiture_reductioncompleted2008-04-112008-04-11California (Oroville), Texas (near San Antonio), North Carolina (Henderson)Aggregates businesssubsequent_events
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Divested to Vulcan as part of DOJ consent order; includes the company's only California quarry and an idle Texas facility. No headcount disclosed.
2008-03-31acquisition_additioncompleted2008-02Manistee, Michigan and Woodville, OhioSpecialty ProductsMD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Acquired assets of the Specialty Magnesia Division of Morton International relating to the ElastoMag product; no headcount disclosed.
2008-03-31acquisition_additioncompleted2008-03Asheboro, North CarolinaAggregates businessMD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Acquired a granite quarry with approximately 40 million tons of reserves; no headcount disclosed.
2007-12-31reduction_in_forcecompleted200ConsolidatedMD&A
f5-10k / GLM-5.3-flash-HTML		Disclosed as a net consolidated headcount reduction of 200 employees during 2007, attributed to plant automation, mobile fleet right-sizing and the economic downturn; not a discrete announced program, and no associated charge disclosed. Filing also notes earnings from operations per average employee rose 15% in 2007.
2007-12-31divestiture_reductioncompletedIndiana; West VirginiaMideast Groupdiscontinued_operations_footnote
f5-10k / GLM-5.3-flash-HTML		Underperforming Aggregates operations disposed of or permanently shut down during 2007; presented as discontinued operations. Aggregate 2007 pretax gain on disposals across all divestitures was $2.7 million. Headcount affected not disclosed.
2007-12-31divestiture_reductioncompletedAlabama; Louisiana; MississippiSoutheast Groupdiscontinued_operations_footnote
f5-10k / GLM-5.3-flash-HTML		Underperforming Aggregates operations disposed of or permanently shut down during 2007; presented as discontinued operations. Headcount affected not disclosed.
2007-12-31divestiture_reductioncompletedIowa; Kansas; OklahomaWest Groupdiscontinued_operations_footnote
f5-10k / GLM-5.3-flash-HTML		Underperforming Aggregates operations disposed of or permanently shut down during 2007; presented as discontinued operations. Headcount affected not disclosed.
2007-12-31othercompleted2002007-12-31United StatesConsolidatedMD&A
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Filer states consolidated headcount was reduced by 200 employees during 2007; no severance charge, action label, or further detail is provided. Not disclosed as a formal restructuring or RIF.
2007-12-31divestiture_reductioncompleted2007-12-31United StatesAggregates business (Mideast, Southeast and West Groups)discontinued_operations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Underperforming operations in Indiana, West Virginia, Alabama, Louisiana, Mississippi, Iowa, Kansas and Oklahoma were disposed of or permanently shut down during 2007 and treated as discontinued operations; no employee counts are disclosed.
2007-12-31acquisition_additioncompleted2007-12-31United StatesWest Groupbusiness_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Acquisitions totaling $12.2 million net cash were completed in 2007 (goodwill of $5.1 million allocated to West Group); no acquired headcount is disclosed.
2007-12-31restructuringcompletedUnited StatesAggregatesItem_1_Business
f5-10k / Qwen3.6-27B-Q8_0		Company disposed of or permanently shut down underperforming operations including aggregates, asphalt, ready mixed concrete, trucking, and road paving. No specific headcount reduction disclosed.
2007-12-31restructuringcompletedUnited StatesSpecialty ProductsItem_1_Business
f5-10k / Qwen3.6-27B-Q8_0		Company disposed of the refractories business of its Magnesia Specialties business. No specific headcount reduction disclosed.
2007-03-31divestiture_reductioncompletedWest VirginiaMideast Groupother
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Underperforming operation disposed of or permanently shut down in 2007; treated as discontinued operations. No employee count, charge, or dates disclosed.
2007-03-31divestiture_reductioncompletedKansas and New MexicoWest Groupother
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Underperforming operations disposed of or permanently shut down in 2007; treated as discontinued operations. No employee count, charge, or dates disclosed.
2006-12-31reduction_in_forcecompleted2252006Disclosed within the Aggregates business cost structure discussion; not explicitly scoped to one segmentMD&A
f5-10k / GLM-5.3-flash-HTML		Headcount reduction during 2006 attributed to plant automation and mobile fleet right-sizing; no discrete announcement date given. Same section notes earnings from operations per employee rose 26% versus 2005.
2006-12-31reduction_in_forcecompleted2006Specialty Products segment — structural composites product line (Martin Marietta Composites)Item_1_Business
f5-10k / GLM-5.3-flash-HTML		Management group and hourly workforce downsized as the composites line narrowed to military, transportation and infrastructure applications; headcount not quantified. The related exit of the composite truck trailer business generated a $3.8 million pretax charge for asset write-offs and accrued contractual obligations.
2006-12-31divestiture_reductioncompleted2006OhioMideast Groupdiscontinued_operations_footnote
f5-10k / GLM-5.3-flash-HTML		Underperforming operations disposed of or permanently shut down during 2006 and reported as discontinued operations; workforce impact not quantified.
2006-12-31divestiture_reductioncompleted2006Alabama; LouisianaSoutheast Groupdiscontinued_operations_footnote
f5-10k / GLM-5.3-flash-HTML		Underperforming operations disposed of or permanently shut down during 2006 and reported as discontinued operations; workforce impact not quantified.
2006-12-31divestiture_reductioncompleted2006Arkansas; Kansas; Missouri; Texas; WashingtonWest Groupdiscontinued_operations_footnote
f5-10k / GLM-5.3-flash-HTML		Underperforming operations disposed of or permanently shut down during 2006 and reported as discontinued operations; workforce impact not quantified.
2006-12-31restructuringcompleted2252006-12-31United StatesAggregates businessMD&A
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Headcount reduced by 225 employees during 2006 as part of plant automation, mobile fleet right-sizing and process improvement initiatives; no severance charge disclosed.
2006-12-31restructuringcompleted2006-12-31United StatesSpecialty Products — structural composites product lineUSD 4 (millions)Item_1_Business
f5-10k / MiMo-V2.6-Flash-fp8-HTML		MMC exited the composite truck trailer business in 2006, wrote off related assets and accrued future licensing payment obligations ($3.8M pretax charge), and downsized the management group and hourly workforce; headcount impact not quantified. Additional $0.4M inventory write-down also recorded.
2006-12-31divestiture_reductioncompleted2006-12-31United StatesAggregates business — Ohio, Alabama, Louisiana, Arkansas, Kansas, Missouri, Texas, Washingtondiscontinued_operations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Various underperforming operations disposed of or permanently shut down during 2006 and reported as discontinued operations; associated headcount not disclosed.
2006-12-31restructuringcompleted2252006-12-312006-12-31United StatesAggregatesMD&A
f5-10k / Qwen3.6-27B-Q8_0		Headcount reduced by 225 employees in 2006 through process improvement and right-sizing.
2006-12-31restructuringcompleted2006-12-312006-12-31North CarolinaSpecialty ProductsItem 1_Business
f5-10k / Qwen3.6-27B-Q8_0		Downsized management group and hourly workforce associated with structural composite product line.
2006-09-30divestiture_reductioncompletedUnited StatesAggregatesother
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Disposals of certain underperforming Aggregates operations in 2006 treated as discontinued operations; no employee counts, dates or severance amounts disclosed.
2005-12-31divestiture_reductioncompletedArkansas and Texas (Texarkana market)Aggregates — asphalt and road paving operationsdiscontinued_operations_footnote
f5-10k / GLM-5.3-flash-HTML		During 2005 the Company divested underperforming asphalt and road paving operations in Arkansas and Texas; Item 1 and MD&A identify the Texarkana road paving business. No employee counts disclosed. All 2005 divestitures and closures were reported as discontinued operations, which recorded net sales of $6.2 million and a pretax loss of $4.2 million (including a $0.9 million pretax loss on disposals) for 2005.
2005-12-31plant_closurecompletedNorth Carolina and OhioAggregates — aggregates facilitiesdiscontinued_operations_footnote
f5-10k / GLM-5.3-flash-HTML		During 2005 the Company shut down underperforming aggregates facilities in North Carolina and Ohio, described in MD&A as certain small locations. No employee counts disclosed; results were included in the 2005 discontinued operations cited in the divestiture action.
2005-12-31divestiture_reductioncompleted2005-12-312005-12-31Arkansas and TexasAggregates segment — asphalt and road paving operationsItem_1_Business
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Divestiture of underperforming asphalt and road paving facilities during 2005; results reported within discontinued operations. Headcount not disclosed. Announcement date shown as fiscal year-end placeholder.
2005-12-31plant_closurecompleted2005-12-312005-12-31North Carolina and OhioAggregates segment — aggregates facilitiesItem_1_Business
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Shutdown of underperforming aggregates facilities during 2005; results reported within discontinued operations. Headcount not disclosed. Announcement date shown as fiscal year-end placeholder.
2005-12-31divestiture_reductioncompleted2005Arkansas, Texas, North Carolina, OhioAggregatesItem_1_Business
f5-10k / Qwen3.6-27B-Q8_0		Divested underperforming facilities involved with asphalt and road paving operations in Arkansas and Texas and shut down underperforming aggregates facilities in North Carolina and Ohio. Specific headcount not disclosed.
2005-06-30plant_closurecompletedOhio, United StatesAggregatesUSD 1 (millions)MD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Filing cites a $1.4 million asset write-down tied to closing an Ohio aggregates plant as a Q2 2005 cost pressure; no employee count, closure date, or severance amount disclosed. Charge is an asset write-down, not severance.
2005-06-30divestiture_reductionin_progressUnited StatesAggregatesbusiness_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Divestitures of certain nonstrategic Aggregates operations occurred during 2005 (and 2004); results reported in discontinued operations. No headcount removed, disposal dates, or workforce-related charges disclosed.
2005-06-30plant_closurecompletedOhioAggregatesUSD 1 (millions)MD&A
f5-10q / Qwen3.6-27B-Q8_0		Asset write-down associated with closure of an Ohio-based aggregates plant.
2004-12-31divestiture_reductioncompleted2004Alabama, California, Tennessee, Washington, Louisiana, OklahomaAggregates (quarries, ready mixed concrete, asphalt, trucking, road paving)discontinued_operations_footnote
f5-10k / GLM-5.3-flash-HTML		Divestiture of nonstrategic operations reported within discontinued operations; no employee headcount disclosed. Components per MD&A: three quarries in Tennessee; a quarry each in Washington and California; a ready mixed concrete plant and the Shreveport, Louisiana road paving business; an asphalt plant and a trucking business in Oklahoma; and an operation in Alabama.
2004-12-31divestiture_reductioncompleted2004-10-29Houston, TexasAggregates — asphalt operationsMD&A
f5-10k / GLM-5.3-flash-HTML		Three asphalt plants representing about 70% of Houston-area asphalt sales divested October 29, 2004; reported in continuing operations due to a continuing financial interest and related financing, with a market-rate aggregates supply agreement to the buyer. No employee headcount disclosed.
2004-12-31acquisition_additioncompleted2004MississippiAggregatesbusiness_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		Sole 2004 acquisition: purchase of the majority member's interest in an aggregates limited liability company for $5.6 million in cash, bringing the previously minority-held business into consolidation. No employee headcount disclosed.
2004-12-31otherannounced2004-122005-01-01Kansas City area (Kansas and Missouri)AggregatesItem_1_Business
f5-10k / GLM-5.3-flash-HTML		Formation of a 50/50 joint venture (Hunt Martin Materials LLC) with Hunt Midwest Enterprises, combining 15 active quarries producing roughly 7.5 million tons annually; the Corporation will consolidate the venture effective January 1, 2005. No employee headcount disclosed.
2004-12-31divestiture_reductioncompleted2004-12-31United States (Alabama, California, Tennessee, Washington, Louisiana, Texas, Oklahoma)Aggregatesdiscontinued_operations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		2004 divestitures of nonstrategic aggregate facilities and asphalt, ready mixed concrete and road paving operations; no employee counts disclosed. Discontinued operations net sales of $15.8 million for 2004.
2004-12-31acquisition_additioncompleted2004-12-31United States (Mississippi)AggregatesUSD 6 (millions)business_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Purchase of the remaining interest in a limited liability company operating an aggregates business for $5,567,000; no headcount added disclosed.
2004-12-31otherannounced2004-12-312005-01-01United States (Kansas City area)AggregatesMD&A
f5-10k / MiMo-V2.6-Flash-fp8-HTML		50/50 joint venture with Hunt Midwest Enterprises effective January 1, 2005 combining 15 active quarries (~7.5 million tons annual production), valued at approximately $75 million; no employee counts disclosed.
2003-12-31divestiture_reductioncompletedUnited States — Alabama, Ohio, Missouri, West Virginia, Louisiana, TexasAggregates divisiondiscontinued_operations_footnote
f5-10k / GLM-5.3-flash-HTML		2003 sales of nonstrategic operations (two Columbus, OH quarries; a WV quarry and sales yard; small Missouri locations; an Alabama quarry; a Louisiana asphalt plant and sales yard; southwestern trucking businesses), presented as discontinued operations. Employee headcount impact not disclosed; the divestitures produced a net pretax disposal gain rather than a charge.
2003-12-31divestiture_reductioncompletedSpecialty Products — Magnesia SpecialtiesItem_1_Business
f5-10k / GLM-5.3-flash-HTML		Magnesia Specialties disposed of two nonstrategic lines of business in 2003; the specific lines and any employee impact are not identified.
2003-12-31divestiture_reductionin_progress2004Shreveport, LouisianaAggregates division — road paving businessMD&A
f5-10k / GLM-5.3-flash-HTML		Disposal of the Shreveport, Louisiana road paving operations was agreed during 2003 and will be finalized upon completion of a specific highway project in 2004; employee impact not disclosed.
2003-12-31divestiture_reductioncompletedAlabama, Louisiana, Missouri, Ohio, Texas, West VirginiaAggregatesdiscontinued_operations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		2003 divestitures of nonstrategic operations in six states; headcount not disclosed. Discontinued operations net sales of $37.2 million for 2003.
2003-12-31divestiture_reductionin_progress2004-12-31Shreveport, LouisianaAggregates — Road PavingMD&A
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Road paving business disposal initiated in 2003, to be finalized upon completion of a highway project in 2004; headcount not disclosed.
2003-12-31acquisition_additioncompletedUnited StatesAggregatesUSD 9 (millions)business_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Acquired remaining interest in an LLC from a majority member for $9.1 million; headcount added not disclosed.
2003-12-31othercompletedUnited StatesSpecialty Products — Magnesia SpecialtiesItem_1_Business
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Magnesia Specialties disposed of two nonstrategic lines of business in 2003; headcount not disclosed.
2003-12-31divestiture_reductioncompleted2003-12-312003-12-31Alabama, Louisiana, Missouri, Ohio, Texas, West VirginiaAggregatesItem_1_Business
f5-10k / Qwen3.6-27B-Q8_0		Company continued sales of nonstrategic operations in 2003, including facilities in listed states. Specific headcount not disclosed.
2003-12-31divestiture_reductioncompleted2003-12-312003-12-31Not specifiedSpecialty ProductsItem_1_Business
f5-10k / Qwen3.6-27B-Q8_0		Magnesia Specialties business disposed of two nonstrategic lines of business in 2003. Specific headcount not disclosed.
2003-09-30othercompleted2003-07-01Manistee, MichiganMagnesia SpecialtiesMD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Successor collective bargaining agreement reached in Q3 2003; no work stoppage; agreement expires August 2007.
2003-09-30othercompleted2003-09-30Manistee, Michigan, United StatesAggregatesother
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Successor collective bargaining agreement reached during Q3 2003 with no work stoppage; new agreement expires August 2007. Number of covered employees not disclosed.
2003-09-30othercompleted2003-09-30Manistee, MichiganMagnesia SpecialtiesMD&A
f5-10q / Qwen3.6-27B-Q8_0		Reached agreement on successor collective bargaining agreement; no work stoppage; expires August 2007.
2003-06-30otherin_progressManistee, Michigan, United StatesMagnesia Specialties (magnesia-based products segment)other
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Collective bargaining agreement scheduled to expire August 2003 was extended while long-term contract negotiations continue; management states a work stoppage is unlikely but gives no assurance.
2002-12-31acquisition_additioncompleted2002United States (North Carolina, Alabama, Texas, Florida)Aggregatesbusiness_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		Six acquisitions completed during 2002; headcount added not disclosed. Consideration: $48.0 million cash plus 244,300 shares valued at $9.7 million, plus assumed liabilities including $7.5 million of debt; one acquisition was an exchange transaction.
2002-12-31divestiture_reductioncompleted2002-05Columbus, Ohio area; Culpepper/Spotsylvania and Fredericksburg, Virginia areasAggregates (quarries)USD 20,023 (thousands)business_combinations_footnote
f5-10k / GLM-5.3-flash-HTML		Headcount affected not disclosed. Value shown is an aggregate pre-tax gain on the two divestitures, not a workforce-related charge; Ohio sale closed May 2002 and both gains were recognized in Q2 2002.
2002-12-31divestiture_reductioncompleted2002Illinois, Southern Iowa, Oklahoma, TennesseeAggregates (incl. a ready mixed concrete plant in Oklahoma)MD&A
f5-10k / GLM-5.3-flash-HTML		Other small nonstrategic operations divested during 2002 (e.g., nine small Southern Iowa locations); headcount and financial impact not disclosed.
2002-12-31acquisition_additioncompletedUnited States (North Carolina, Alabama, Texas, Florida)AggregatesUSD 48 (millions)business_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Six acquisitions completed during 2002 for $48.0 million cash plus 244,300 shares ($9.7 million) and assumed liabilities including $7.5 million debt; no headcount added disclosed.
2002-12-31divestiture_reductioncompletedUnited States (Ohio, Virginia, Iowa, Oklahoma, Illinois, Tennessee and other states)Aggregates (nonstrategic operations)business_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Planned divestiture of nonstrategic operations during 2002, including six quarries in the Columbus, Ohio area, two quarries in Fredericksburg/Culpepper, Virginia, nine small locations in southern Iowa and a ready mixed concrete plant in Oklahoma; aggregate gain of $20.0 million recognized on the two largest transactions. No employee counts disclosed; further divestitures planned for 2003.
2002-09-30divestiture_reductioncompletedColumbus, Ohio areaAggregatesMD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Sale of six quarries in the Columbus, Ohio area; $19.4 million of goodwill allocated to divestitures year-to-date, primarily these quarries. No employee counts disclosed.
2002-09-30divestiture_reductioncompletedFredericksburg and Culpeper, Virginia areasAggregatesMD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Divestiture of quarries in the Fredericksburg and Culpeper, Virginia areas during the nine months ended September 30, 2002. No employee counts disclosed.
2002-09-30divestiture_reductioncompleted2002-08-20Rural southern IowaAggregatesother
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Sale to Douds Stone of two portable plants, six production locations and one sand plant; $0.7 million of goodwill allocated to this divestiture in Q3. No employee counts disclosed.
2002-09-30acquisition_additioncompletedUnited StatesAggregatesbusiness_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Multiple 2002 acquisitions added $41.2 million of goodwill year-to-date ($13.1 million in Q3), including the Meridian acquisition. No headcount added through acquisitions is disclosed.
2002-06-30divestiture_reductioncompleted2002-05-21Fredericksburg and Culpeper, Virginia, United StatesAggregatesother
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Disposition of two quarries announced May 21, 2002; terms not disclosed and no headcount impact quantified. Part of $20.3 million of divestiture gains recognized in Q2 2002.
2002-06-30divestiture_reductioncompleted2002-06-17Columbus, Ohio, United StatesAggregatesother
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Sale of six quarries to an Oldcastle Materials affiliate announced June 17, 2002; terms not disclosed and no headcount impact quantified. Goodwill of $18.8 million allocated to the divestiture; nondeductible goodwill write-off raised the effective tax rate.
2002-06-30acquisition_additioncompleted2002-05-21Uvalde, Texas and Haw River, North Carolina, United StatesAggregatesbusiness_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Acquisition of a Uvalde, Texas limestone quarry and a granite quarry near Haw River, North Carolina announced May 21, 2002; terms and acquired headcount not disclosed.
2002-06-30acquisition_additioncompleted2002-06-17Central Alabama, United StatesAggregatesbusiness_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Purchase of four quarry operations from Oldcastle Materials announced June 17, 2002; quarries produce about five million tons of limestone annually. Terms and acquired headcount not disclosed.
2001-12-31acquisition_additioncompleted2001-04-032001-04-03Southwestern and western United States (11 states)AggregatesUSD 238 (millions)business_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Purchase of remaining interest in Meridian Aggregates Company; consideration includes original 1998 investment. No headcount disclosed; Meridian operated 25 production facilities and seven rail-served distribution yards.
2001-12-31acquisition_additioncompleted2001-12-312001-12-31United States (Southwest, MidAmerica, Midwest, Central, Meridian, Southeast divisions)Aggregates, asphalt and ready mixedUSD 40 (millions)business_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Twelve smaller acquisitions completed during 2001 for combined cash of $40.1 million plus 1,684,400 shares valued at $77.3 million; most occurred in first half of 2001. No headcount disclosed.
2001-12-31divestiture_reductioncompleted2001-05-012001-05-01United States (Manistee, Michigan and related operations)Magnesia Specialties — refractories businessUSD 34 (millions)business_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Sale of refractories assets to Minerals Technologies Inc. subsidiary for $34 million; gain of $8.9 million recognized. No headcount disclosed; Baltimore laboratory closed following the sale.
2001-12-31plant_closurecompleted2001-12-31United States (principally rural markets)AggregatesMD&A
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Corporation consolidated or shut down 11 aggregates operations during 2001 in declining rural markets; costs included in 2001 cost of sales. No headcount or charge quantified.
2001-12-31divestiture_reductioncompleted2001-12-31Dallas/Fort Worth, TexasAggregates — asphalt operationsMD&A
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Divestiture of Dallas/Fort Worth asphalt business acquired in 1999 with Marock, Inc.; no headcount or proceeds disclosed.
2001-09-30acquisition_additioncompleted2001-04-032001-04-03United StatesAggregatesMD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Purchase of remaining interest in Meridian Aggregates completed 2001-04-03 for approximately $238 million including original $42 million investment; no employee count disclosed.
2001-09-30divestiture_reductioncompleted2001-05-012001-05-01United StatesMagnesia SpecialtiesMD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Sale of refractories assets to Minteq for $34 million; retained working capital expected to yield $10-14 million; no employee count disclosed.
2001-09-30acquisition_additionannounced2001-09-27Kansas, United StatesAggregatesother
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Acquisition of four active limestone quarries and two inactive sites from Walker Stone Company for cash and common stock; purchase price not disclosed; no employee count disclosed.
2001-09-30acquisition_additionannounced2001-09-27Nebraska, United StatesAggregatesother
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Acquisition of a small limestone quarry near Omaha from City Wide Rock & Excavating for cash; purchase price not disclosed; no employee count disclosed.
2001-06-30otherin_progressIndianapolis, Indiana areaAggregatesUSD 1 (millions)MD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Labor dispute and resulting strike at three plants; over $1.0 million in nonrecurring costs in Q2 2001 from lost production, security, and hiring/training of new employees. Additional costs expected in Q3 2001. No affected-employee count disclosed.
2001-06-30otherin_progressUnited States — Indianapolis, Indiana areaAggregates Division — three plantsUSD 1 (millions)MD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Labor dispute and resulting strike at three Indianapolis-area plants caused over $1.0M in nonrecurring costs (lost production, security, hiring/training). Additional costs expected in Q3 2001. No employee count disclosed.
2001-06-30acquisition_additioncompleted2001-04-032001-04-03United StatesAggregates Divisionbusiness_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Acquisition of remaining interest in Meridian Aggregates Company completed April 3, 2001 for ~$235M. No headcount added disclosed.
2001-06-30divestiture_reductioncompleted2001-05-012001-05-01United StatesMagnesia Specialties — refractories businessMD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Sale of refractories assets to Minerals Technologies (Minteq) for $34M; net gain of $8.4M recognized. No headcount reduction disclosed.
2001-03-31acquisition_additioncompleted2001-04-032001-04-03United StatesAggregatessubsequent_events
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Purchase of remaining interests in Meridian Aggregates Company completed after quarter end; purchase price approx. $235M including original $42M investment. No employee count disclosed; completion announced 2001-04-10.
2001-03-31divestiture_reductioncompleted2001-05-012001-05-01United StatesMagnesia Specialties — refractories businessMD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Sale of refractories assets to Minerals Technologies Inc. for $34M completed after quarter end; no headcount disclosed. Refractories contributed $57.3M of Magnesia Specialties net sales in 2000; Manistee, Michigan facility being repositioned.
2000-12-31acquisition_additionannounced2000-09-302001-06-30Southwestern and Western United StatesAggregatesUSD 235 (millions)subsequent_events
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Meridian investors exercised option Sept 2000; purchase of remaining Meridian interests expected early Q2 2001 for ~$235M; no headcount disclosed
2000-12-31divestiture_reductionannounced2001-02-232001-06-30United StatesMagnesia Specialties — Refractoriessubsequent_events
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Agreement to sell refractories assets to Minerals Technologies subsidiary; gain expected but largely offset by write-down of retained assets; no headcount disclosed
2000-12-31otherannounced2001-03-31Woodville, OhioMagnesia Specialties — Woodville operation transferred to Aggregates (MidAmerica Division)Item_1_Business
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Woodville, Ohio operation (dolomitic lime and >1M tons/yr aggregates) to be transferred from Magnesia Specialties to Aggregates MidAmerica Division; no headcount disclosed
2000-09-30acquisition_additionannounced2000-09-062001-03-31United StatesAggregatesUSD 235 (millions)other
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Asset transaction to acquire remaining interests in Meridian Aggregates for an estimated $235 million purchase price; no headcount impact disclosed. Expected completion in early 2001.
2000-09-30otherannouncedUnited StatesMagnesia SpecialtiesMD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Management evaluating strategic alternatives, including a possible sale of the non-core Magnesia Specialties division, with Banc of America Securities retained as financial advisor; no announcement date, headcount impact, or assurance of completion disclosed.
1999-12-31acquisition_additioncompletedUnited StatesAggregatesUSD 77 (millions)MD&A
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Ten acquisitions completed in 1999 for combined $77.1M in cash, stock and other consideration across TX, TN, LA, AR, WV, MS, AL; no headcount additions disclosed
1999-09-30acquisition_additioncompleted1999-09-07Texas, United StatesAggregatesUSD 41 (millions)other
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Acquisition of Marock, Inc.; cash purchase price approximately $41 million. No employee count disclosed.
1999-09-30acquisition_additioncompleted1999-09-24Tennessee, United StatesAggregatesother
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Acquisition of limestone quarry near Nashville from Menefee Crushed Stone Company, Inc.; purchase price not announced. No employee count disclosed.
1999-09-30acquisition_additionannounced1999-10-18Louisiana and Arkansas, United StatesAggregates / Construction MaterialsUSD 40 (millions)other
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Subsequent-event acquisition of L.J. Earnest, Inc.; consideration includes approximately 300,000 restricted shares, a promissory note, and cash totaling approximately $40 million. No employee count disclosed.
1999-06-30othercompleted1999-08Manistee, Michigan, United StatesMagnesia SpecialtiesMD&A
f5-10q / GLM-5.3-flash-fp4-HTML		A new union contract for employees at a major operating facility in Manistee, Michigan was ratified in August 1999; contract expires August 2003. Number of covered employees not disclosed.
1999-06-30othercompleted1999-08-012003-08-01Manistee, Michigan, United StatesMagnesia SpecialtiesMD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		New union contract ratified in August 1999 for employees at a major Manistee, MI facility; contract expires August 2003. Number of employees covered not disclosed.
1999-06-30othercompleted1999-08Manistee, MichiganMagnesia SpecialtiesMD&A
f5-10q / Qwen3.6-27B-Q8_0		New union contract ratified for employees at major operating facility; expires August 2003.
1998-12-31acquisition_additioncompleted1998-12-041998-12-04Texas, United StatesAggregatesbusiness_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Acquired Redland Stone Products Company for $272 million cash plus ~$8 million assumed liabilities and transaction costs. No employee headcount disclosed for the acquired business.
1998-12-31acquisition_additioncompleted1998-10-311998-10-31Southwestern and Western United StatesAggregatesItem_1_Business
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Initial 14% investment in Meridian Aggregates Company; mechanism to purchase remaining interest within five years. No employee headcount disclosed.
1998-12-31acquisition_additioncompleted1998-12-311998-12-31Louisiana, Arkansas, Texas, United StatesAggregatesItem_1_Business
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Acquired Mid-State Construction & Materials in 1998, including four ready mixed concrete plants, three asphalt plants, and a small construction company. No employee headcount disclosed.
1998-12-31plant_closurecompleted1998-12-31United StatesMagnesia SpecialtiesMD&A
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Calcium carbonate grinding facility that mills and grinds shells into calcium carbonate products was closed at the end of 1998; negatively impacted 1998 operating earnings. No employee count disclosed.
1998-12-31acquisition_additioncompleted1998-12-041998-12-04TexasAggregatesItem_1_Business
f5-10k / Qwen3.6-27B-Q8_0		Acquired Redland Stone Products Company. Headcount not explicitly disclosed in acquisition summary.
1998-12-31acquisition_additioncompleted1998-10-311998-10-31Southwestern and Western United StatesAggregatesItem_1_Business
f5-10k / Qwen3.6-27B-Q8_0		Purchased initial 14% interest in Meridian Aggregates Company. Headcount not explicitly disclosed.
1998-12-31acquisition_additioncompleted1998-12-311998-12-31Louisiana, Arkansas, TexasAggregatesItem_1_Business
f5-10k / Qwen3.6-27B-Q8_0		Purchased Mid-State Construction & Materials. Headcount not explicitly disclosed.
1998-09-30plant_closureannounced1998-12-31Magnesia SpecialtiesMD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Company expects fourth quarter 1998 earnings to be negatively impacted by costs related to the expected closure of a facility that mills and grinds shells into calcium carbonate products; costs under evaluation and not expected to be material. No employee counts disclosed.
1998-09-30plant_closureannounced1998-11-16United StatesMagnesia SpecialtiesMD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Expected closure of a facility milling and grinding shells into calcium carbonate products; costs to be recognized in Q4 1998, described as not expected to be material. No headcount or charge amount disclosed; announcement date is the 10-Q filing date as no earlier date is stated.
1998-06-30acquisition_additioncompleted1998-06-03Northern Kentucky (Petersburg) and Ohio (between Dayton and Cincinnati)Aggregatesother
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Asset purchase of two sand and gravel operations (~1.5 million tons annual capacity) for cash plus surplus real estate swap; purchase price not disclosed and no headcount figure given.
1998-06-30acquisition_additioncompleted1998-07-30Lenoir, North CarolinaAggregatessubsequent_events
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Post-quarter asset purchase of a granite quarry from Caldwell Stone Company, Inc.; ~500,000 tons expected annual shipments, reserves over 20 million tons; price and headcount not disclosed.
1998-06-30acquisition_additioncompleted1998-08-04Barnhart, MissouriAggregatessubsequent_events
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Post-quarter cash purchase of limestone quarry assets (~800,000 tons annual capacity, Missouri River access); terms and headcount not disclosed.
1998-03-31acquisition_additionannounced1998-04-021998-04-01Hot Springs, Arkansas, United StatesAggregates (two granite quarries, four ready mixed concrete plants, three asphalt plants, and a small construction company)subsequent_events
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Purchase of Mid-State Construction & Materials, Inc.; consideration was cash plus 253,415 shares issued 1998-04-01. No employee headcount disclosed.
1997-12-31acquisition_additioncompleted1997-05-281997-05-28Ohio and Indiana, United StatesAggregates DivisionUSD 242 (millions)business_combinations_footnote
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Acquisition price approximately $242 million in cash plus assumed liabilities. No headcount figure disclosed for acquired employees. Included 29 production facilities.
1997-12-31acquisition_additioncompleted1997-12-311997-12-31United StatesAggregates DivisionItem_1_Business
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Eight additional smaller acquisitions completed during 1997 in Virginia, Kentucky, Illinois, Indiana, Missouri, Iowa, and Mississippi. No headcount figures disclosed for any of these acquisitions.
1997-12-31acquisition_additioncompleted1997-05-281997-05-28United States (Ohio, Indiana)AggregatesUSD 242 (millions)Item_1_Business
f5-10k / Qwen3.6-27B-Q8_0		Acquisition of American Aggregates Corporation. Employee count not explicitly disclosed in filing, but acquisition added 29 production facilities.
1997-09-30acquisition_additioncompleted1997-05-28United StatesAggregatesbusiness_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Purchase of American Aggregates Corporation from CSR America; results consolidated since 1997-05-28. No employee headcount added disclosed; approximately $8 million provision recorded for transaction and integration costs.
1997-09-30acquisition_additioncompleted1997-09-05United States (Iowa)AggregatesMD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Acquisition of remaining 50% of Kaser Corporation (13 aggregates operations in southeastern Iowa, ~3.2 million tons annual capacity); consideration was cash plus common stock. No employee headcount disclosed.
1997-06-30acquisition_additioncompleted1997-05-28United StatesAggregatesUSD 8 (millions)business_combinations_footnote
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Purchase of American Aggregates Corporation from CSR America, Inc.; no employee headcount added disclosed. The ~$8M provision covers transaction and integration costs over 24 months, not severance.
1996-12-31acquisition_additionannounced1997-01-301997-06-30United States (Ohio, Indiana)Aggregates DivisionUSD 235 (millions)subsequent_events
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Non-binding letter of intent to acquire American Aggregates Corporation for ~$235M cash plus assumed liabilities. Headcount not disclosed. Expected to close Q2 1997.
1996-12-31acquisition_additioncompleted1996-01-011996-12-31United States (Kansas)Aggregates DivisionMD&A
f5-10k / MiMo-V2.6-Flash-fp8-HTML		Two aggregates operations and three quarry sites acquired in Kansas during 1996; adds ~1 million tons annual capacity. Headcount not disclosed.
1996-09-30othercompletedOhioMagnesia SpecialtiesMD&A
f5-10q / Qwen3.6-27B-Q8_0		Strike occurred during 1995 at a major operating location; referenced as a comparative factor for 1996 earnings improvement.
1996-06-30othercompleted1995-08-01Manistee, MichiganMagnesia SpecialtiesMD&A
f5-10q / GLM-5.3-flash-fp4-HTML		June 1995 strike at a Manistee, Michigan operating facility was settled in early August 1995 with a new four-year labor agreement; strike adversely affected 1995 division earnings.
1996-06-30othercompleted1996-06-30Woodville, OhioMagnesia SpecialtiesMD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Labor union contract at the Woodville, Ohio lime operation expired in June 1996 and was renegotiated successfully without work interruption.
1996-06-30othercompleted1996-06-30United States — Woodville, OhioMagnesia SpecialtiesMD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Labor union contract at Woodville, Ohio lime plant expired June 1996; renegotiated successfully without work interruption. No headcount impact disclosed.
1996-03-31otherin_progress1996-06-30Woodville, OhioMagnesia SpecialtiesMD&A
f5-10q / GLM-5.3-flash-fp4-HTML		Labor union contract covering employees at the Woodville, Ohio magnesia operation expires in June 1996; negotiations pending, with no assurance a successor agreement will be reached or that a work stoppage will not occur.
1996-03-31divestiture_reductioncompleted1996-03-311996-04-04Pittsburgh area, United StatesFormer Dravo operationsMD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Sale agreement effective March 31, 1996; transaction closed April 4, 1996. No headcount disclosed; related costs were provided for in Q1 1995 under purchase accounting, so no impact on current-period results.
1996-03-31otherin_progress1996-06-30Woodville, Ohio, United StatesMagnesia SpecialtiesMD&A
f5-10q / MiMo-V2.6-Flash-fp8-HTML		Labor union contract covering Woodville, Ohio employees expires June 1996; negotiations pending. Management believes relations are good and expects a successful negotiation, but no assurance of a successor agreement or absence of a work stoppage. Number of covered employees not disclosed.