Health Concerns For Silica In Outdoor Air Danger In The
sep 25, 2014 mining, processing and transporting sand generate large quantities of silica dust, which is notorious for the damage it does to the lungs and respiratory system when inhaled. In recent years, the dramatic expansion of hydraulic fracturing and horizontal drilling technology to extract gas and oil, commonly called "fracking," has led to boom in sand mining across the upper midwest, creating a also called silica sand or quartz sand, silica is made of silicon dioxide silicon compounds are the most significant component of the earths crust. since sand is plentiful, easy to mine and relatively easy to process, it is the primary ore source of silicon. the metamorphic rock, quartzite, is the potential air pollutants of most concern from frac sand mining are airborne particles, including particles less than microns in size particles less than 2.5 microns in size and crystalline silica, which ranges across both size categories.