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COMMON SOURCES OF SILICA
Silicon dioxide is formed into a crystalline structure over millions of years. Thirty percent of all minerals are silicates (minerals containing silica), and geologists estimate that they could comprise up to 90% of the earth's crust. [1] The amount of RCS in any specific dust emission is based upon the silica concentration in the material and the application.
MATERIALS CONTAINING SILICA
- Limestone
- Coal
- Ore
- Cement
- Concrete
- Brick
- Mortar
- Stone
- Rock/aggregate
- Soil
JOBS WHERE SILICA DUST EXPOSURE IS COMMON
- Glass manufacturing
- Cement structure construction
- Foundries
- Sand blasting
- Hydraulic fracturing
- Bulk handling
- Farming
- Quarrying (extraction and blasting)
- Earth moving
- Tunnel construction
- Bulk cargo handling
- Bulk storage
- Concrete and raw material cutting
- Drilling and boring
- Crushing and processing
- Mining
Concrete cutting with a hand saw generates copious amounts of silica dust.
Atomized mist creates a wide area of airborne and surface dust control at the point of emission.
[1] Nave, R. “Abundances of the Elements in the Earth’s Crust”, Georgia State University Physics Lab. Atlanta, GA. Feb. 21, 2017. http://hyperphysics. phy-astr.gsu.edu/hbase/Tables/elabund.html
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