The Occupational Safety and Health Administration (OSHA) released a guide for helping small businesses protect workers from silica hazards. Workers can be exposed to crystalline silica while cutting, sanding or drilling brick, mortar, sand or concrete. Industries where employers can put workers at risk include masonry, rock mining, stone cutting, quarrying, glass manufacturing and sandblasting. Silica particles are 100 times smaller than a grain of sand, and are easily trappe