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In 2023, the aggregate industry in the United States mined and sold 1.5 billion tons of crushed stone valued at more than $24 billion and 920 million tons of construction sand and gravel valued at $11 billion. [1] [2] There are thousands of aggregate-producing companies in the US, operating in each of the 50 states, and employing 105,000 people.
Quarry established c. 1890, an early regional source of Sioux Quartzite for construction, and since World War I a leading international producer of silicon dioxide for industrial abrasives. [4] Louis Hultgren House and Sand Pit, Kerrick, Minnesota, NRHP-listed. A molding sand quarry.
Construction aggregate, or simply aggregate, is a broad category of coarse- to medium-grained particulate material used in construction. Traditionally, it includes natural materials such as sand, gravel, crushed stone. As with other types of aggregates, it is a component of composite materials, particularly concrete and asphalt.
Granite Construction works in both public and private sector transportation infrastructure projects that include: roads and highways, bridges, dams, water reservoirs, railroads, seaports, and airports. The materials division produces construction materials such as sand, gravel, ready-mix and asphalt concrete.
Warehouse construction began in May of that year, and by August, six warehouses were receiving material for storage. Those warehouses are still in use today. The lull between World War I and World War II reduced center operations to mostly reconditioning and sale of the stockpiles which had been needed earlier to ensure the nations defense.
2012, The company introduced N-sulGuard® SMC to support Ag and Construction Equipment and Electrical markets. [4] 2013.8, the company announced Airilite™, an ultra-low density SMC, about 1.18 sp.gr. [9] 2013.10, the company announced the low-density Featherlite® SMC has reached 10,000,000 pounds.