30 C.F.R. § 56.4101 Warning signs.
Title 30 - Mineral Resources
Readily visible signs prohibiting smoking and open flames shall be posted where a fire or explosion hazard exists.
Title 30: Mineral Resources
PART 56—SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES
Subpart C—Fire Prevention and Control
Prohibitions/Precautions/Housekeeping
§ 56.4101 Warning signs.
