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Code · CFR · Title 30 — Mineral Resources · Part 60 · § 60.10

§ 60.10. Permissible exposure limit (PEL).

33 words·~1 min read·/us/cfr/t30/s§ 60.10·

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The mine operator shall ensure that no miner is exposed to an airborne concentration of respirable crystalline silica in excess of 50 µg/m 3 for a full-shift exposure, calculated as an 8-hour TWA.
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