29 Aug '13, 10am

Cutting fiber-cement siding is dusty. How dangerous is the dust?

The Occupational Health and Safety Administration is proposing new rules that would lower health risks for hundreds of thousands of U.S. construction workers routinely exposed to crystalline silica on the job. OSHA said current limits, now more than 40 years old, are "outdated, inconsistent between industries, and do not adequately protect worker health." The new regulations would save between 579 and 796 lives per year and prevent nearly 1,600 new cases of a deadly lung ailment called silicosis annually, the agency said. Crystalline silica is a tiny particle, 100 times smaller than a grain of sand, produced when workers grind, cut, or crush stone, concrete, brick, mortar, or fiber-cement products. Common operations, such as cutting tile or fiber-cement siding, can generate silica-laden dust. OSHA said about 1.85 million construction workers in the United States are expose...

Full article: http://www.greenbuildingadvisor.com/blogs/dept/green-buil...

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