advantages of crushed or artificial sand,
Frequently Asked Questions: Respirable Crystalline Silica . - OSHA
Mar 7, 2016 . pottery, ceramics, bricks, concrete and artificial stone. . ordinary sand found on beaches or playgrounds – is generated by . blocks, or ceramic products; and cutting or crushing stone generates respirable dust. .. The rule is estimated to provide average annual net benefits over the next 60 years of $3.8 to.