The Code of Federal Regulations (CFR) is published and updated annually by the Office of the Federal Register. The CFR organizes the rules of the various Federal agencies into 50 titles according to subject matter.
MSHA rules are in Title 30 of the CFR, Mineral Resources, Chapter I.
30 CFR Online Edition
The electronic edition (e-CFR) of Title 30 CFR is updated regularly as final rules become incorporated into the code.
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30 CFR Annual Edition [Revised as of July 1 each year]
Access guides and tools to help ensure compliance with current regulations and standards.