![]() Activities such as abrasive blasting with sand sawing brick or concrete sanding or drilling into concrete walls grinding mortar manufacturing brick, concrete blocks, stone countertops, or ceramic products and cutting or crushing stone result in worker exposures to respirable crystalline silica dust. Respirable crystalline silica – very small particles at least 100 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. It is also used to make products such as glass, pottery, ceramics, bricks, and artificial stone. Materials like sand, stone, concrete, and mortar contain crystalline silica. Inspection Procedures for the Respirable Crystalline Silica StandardsĬrystalline silica is a common mineral found in the earth's crust.National Emphasis Program – Respirable Crystalline Silica.Video: Protecting Workers from Silica Hazards in the Workplace.Table 1 Task Fact Sheets for Construction. ![]() ![]() Controlling Silica Dust in Construction – Videos for Table 1 Tasks. ![]()
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