Our company has been using fiber-cement siding for more than 10 years. While we like its durability, we don’t like breathing the dust generated by cutting it — not to mention the potential for developing silicosis or lung cancer.
OSHA has established permissible exposure limits (PEL) for silica and other types of dust. Because levels are measured in milligrams of dust per cubic meter of air, there’s no practical way for carpenters to determine their exposure, so it’s best to avoid breathing the dust altogether. In Washington state, where I work, the Department of Labor...
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