30 CFR §75.1104
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Underground storage places for lubricating oil and grease shall be of fireproof construction. Except for specially prepared materials approved by the Secretary, lubricating oil and grease kept in all underground areas in a coal mine shall be in fireproof, closed metal containers or other no less effective containers approved by the Secretary.