Masonry Magazine December 2009 Page. 22
The Big Deal About Silica Dust Collection
BY BRIAN DELAHAUT
Silica is the second-most common compound on Earth. It is found in sand, minerals, granite, sandstone, flint and slate. It also can be in soil, mortar, plaster and shingles. The cutting, breaking, crushing, drilling, grinding or abrasive blasting of these materials may produce fine silica dust.