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OCLC Number:74724372
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NTL Classification:NTL-HIGHWAY/ROAD TRANSPORTATION-Materials;NTL-HIGHWAY/ROAD TRANSPORTATION-HIGHWAY/ROAD TRANSPORTATION;
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Abstract:Natural aggregates (construction sand and gravel and crushed stone) make up the largest component of nonfuel mineral materials consumed in the United States. Most of these materials are used in construction activities, such as in buildings and roads. In highways, natural aggregates are incorporated into asphalt and concrete and are used as road base. The vast system of roads and highways in United States provides a critical service to the country’s economy and people. The construction of these roads and highways has required and continues to require large quantities of materials, such as aggregates, asphalt, cement, and steel. The materials are providing services every time the road or highway is used.
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