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.  The amount of RCS in any specific dust emission is based upon the silica concentration in the material and the application.
MATERIALS CONTAINING SILICA
JOBS WHERE SILICA DUST EXPOSURE IS COMMON
- Glass manufacturing
- Cement structure construction
- Sand blasting
- Hydraulic fracturing
- Bulk handling
- Quarrying (extraction and blasting)
- Earth moving
- Tunnel construction
- Bulk cargo handling
- Bulk storage
- Concrete and raw material cutting
- Drilling and boring
- Crushing and processing
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.
 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