Even very small amounts of silica dust are harmful

We've written about the dangers of silica dust or respirable crystalline silica before. It is an invisibly fine dust generated when quarrying and processing sand and gravel.

You only need to be exposed to a very small amount of silica dust daily for it to be harmful http://t.co/RTbeZQt8Pi pic.twitter.com/b0dK1BfTCI
— Arco (@ArcoSafety) September 18, 2014