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Code · CFR · Title 30 — Mineral Resources · Part 57 · § 57.5045

§ 57.5045. Posting of inactive workings.

32 words·~1 min read·/us/cfr/t30/s§ 57.5045·

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Inactive workings in which radon daughter concentrations are above 1.0 WL, shall be posted against unauthorized entry and designated by signs indicating them as areas in which approved respirators shall be worn.
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§ 57.5045
Posting of inactive workings.
Fed. Reg.×1
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