Persons engaged in chipping, hammering, crushing, loading and transporting rock products
Persons involved in the sandblasting of buildings or old oilfield equipment involving concrete or other materials
Persons who extensively saw, hammer, drill, grind, chip, or work with concrete or other rock substances
Persons involved in the shipbuilding industry
Miners, both surface and underground
Welders and grinders
Foundry workers ( mold shake-outs or knockouts, sand screening, sand recovery, conveying, grinding, etc.),
Cement, stone, clay, brick and glass production industries are at risk.
Manufacture of paints
Makers of soaps, and detergents also produce silica dust.
Basically any type of work that involves the creation of large dust clouds containing silica can be hazardous. Silica dust may be invisible to the naked eye and is very light and often remains airborne for long periods. If a single worker is diagnosed with silicosis, his co-workers are at high risk of developing silicosis.