30 CFR §75.1720-1
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Hard hats or hard caps distinctively different in color from those worn by experienced miners shall be worn by each newly employed, inexperienced miner for at least one year from the date of his initial employment as a miner or until he has been qualified or certified as a miner by the State in which he is employed.