Characterization of Silica Exposure during Manufacturing of .
WEBJun 22, 2020 · Silica in the form of quartz is the second most abundant mineral on the earth's crust (the most abundant mineral is feldspar); the other main polymorphs of silica are tridymite and cristobalite . Respirable crystalline silica (particles with diameters smaller than 10 μm) is created during mechanical manipulations (, cutting, grinding ...