U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 28, 2025
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All TitlesTitle 42Chapter IPart 37Subpart § 37.90 - § 37.98 - Subpart—Spirometry Testing
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Under this subpart, coal mine operators are required to provide spirometry testing to both current and newly employed coal miners, using medical facilities approved by NIOSH in accordance with standards established in this subpart.
