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United States Code
Title 30
Chapter 22
Subchapter II
Interim Mandatory Health Standards
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841
Mandatory health standards for underground mines; enforcement; review; purpose
842
Dust concentration and respiratory equipment
843
Medical examinations
844
Rock dust and gas hazards; controls
845
Dust standards in presence of quartz
846
Noise standards; promulgation of new standards; tests; procedures; protective devices