The federal government is working on regulations for U.S. mines which includes reducing exposure to silica dust for all ... that requirement to places like sand and gravel quarries, too.

J. plant of the Standand Oil Co. uses it. Essentially, this stuff is colloidal silica possessing immense absorbent qualities. It looks like coarse sand, but has pores so fine no microscope can ...

A silica sand mining project will move forward in a community east of Lake Winnipeg, led by a company that plans to create manufacturing jobs in the solar sector in the Interlake — but some ...