According to Jason Willett, crushed stone commodity specialist for USGS, in 2010, estimated aggregates production totaled 1.910 billion metric tons. That is slightly less than the estimated 1.950 billion metric tons produced in 2009. The information was just released as part of the agency’s 2011 Mineral Commodity Surveys.
Crushed stone valued at $11 billion was produced by 1,600 companies operating 4,000 quarries, 91 underground mines, and 195 sales/distribution yards in 50 States. Estimated production for 2010 was 1.150 billion metric tons.
Construction sand and gravel valued at $5.9 billion was produced by an estimated 3,900 companies from about 6,000 operations in 50 states. Estimated production for 2010 was 760 million metric tons.
Leading states in the production of crushed stone, in descending order of production, were Texas, Pennsylvania, Missouri, Illinois, Florida, Georgia, Kentucky, Indiana, Ohio and Virginia, together accounting for 50 percent of the total crushed stone output.
Of the total crushed stone produced in 2010, about 68 percent was limestone and dolomite; 13 percent, granite; 7 percent, miscellaneous stone; 6 percent, traprock; and the remaining 6 percent was divided, in descending order of tonnage, among sandstone and quartzite, volcanic cinder and scoria, marble, calcareous marl, slate and shell.
Of the crushed stone consumed in the United States in 2010, 44 percent was reported by use, 26 percent was reported for unspecified uses and 30 percent of the total consumed was estimated for non-respondents to USGS canvasses.
Of the 508 million tons reported by use, 82 percent was used as construction material, mostly for road construction and maintenance; 10 percent, for cement manufacturing; 2 percent each, for lime manufacturing and for agricultural uses; and 4 percent, for special and miscellaneous uses and products.
Sand and Gravel
Leading producing states for construction sand and gravel, in order of decreasing tonnage, were Texas, California, Arizona, Colorado, Wisconsin, Michigan, Minnesota, New York, Nevada and Ohio, which together accounted for about 50 percent of the total output.
It is estimated that about 44 percent of construction sand and gravel was used as concrete aggregates; 23 percent for road base and coverings and road stabilization; 14 percent as construction fill; 12 percent as asphaltic concrete aggregates and other bituminous mixtures; 3 percent for plaster and gunite sands; 1 percent for concrete products, such as blocks, bricks, and pipes; and the remaining 3 percent for filtration, golf courses, railroad ballast, roofing granules, snow and ice control, and other miscellaneous uses.
For more information, go to http://minerals.usgs.gov/minerals/pubs/mcs/2011/mcs2011.pdf