Code of Federal Regulations
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30 CFR Mineral Resources
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I Mine Safety and Health ...
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O Coal Mine Safety and He...
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74 Coal Mine Dust Samplin...
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Subpart B —
Approval Requirements for Coal Mine Dust Personal Sampler Unit
§74.3 —
Sampler unit
§74.4 —
Specifications of sampler unit
§74.5 —
Tests of coal mine dust personal sampler units
§74.6 —
Quality control