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enforcement for the respirable crystalline silica in construction standard silica rule updates submit a question crystalline silica is a common mineral found in the earth's crust. materials like sand, stone, concrete, and mortar contain crystalline silica. it is also used to make products such as glass
, pottery, ceramics, bricks, and artificial stone. respirable crystalline silica – very small particles at least times smaller than ordinary sand you might find on beaches and playgrounds – is created when cutting, sawing, grinding, drilling, and crushing stone, rock, concrete, brick, block, and mortar...
https://www.osha.gov/dsg/topics/silicacrystalline/