Reducing Hazardous Dust Exposure When Cutting Fiber-Cement Siding
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چکیده
Breathing dust that contains respirable crystalline silica can lead to silicosis, a deadly lung disease. Respirable dust is that fraction of the aerosol that is small enough to reach the deeper, gas-exchange regions of the lungs. No effective treatment exists for silicosis, but it can be prevented by controlling workers’ exposures to dust containing crystalline silica. Exposure to crystalline silica has also been linked to lung cancer, kidney disease, reduced lung function, and other disorders [NIOSH 2002]. Crystalline silica is found in several construction materials, such as brick, block, fiber-cement siding, mortar and concrete. Many construction tasks have been associated with overexposure to dust containing crystalline silica [Chisholm 1999, Flanagan et al. 2003, Rappaport et al. 2003, Qi et al. 2013a]. Among these tasks are tuckpointing, concrete cutting, concrete grinding, abrasive blasting, and cutting fiber-cement siding.
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