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Christopher J. Williamson, JD

Williamson is the assistant secretary of Labor for Mine Safety and Health.

Most recent by Christopher J. Williamson, JD

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May 09, 2024
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Q&A: Rule limiting silica exposure for miners ‘long time coming’

Under a recently finalized rule, the U.S. Department of Labor’s Mine Safety and Health Administration set a 50 g/m3 full-shift exposure limit on respirable crystalline silica for miners, according to a press release.