30 C.F.R. § 56.18009 Designation of person in charge.
Title 30 - Mineral Resources
When persons are working at the mine, a competent person designated by the mine operator shall be in attendance to take charge in case of an emergency.
Title 30: Mineral Resources
PART 56—SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES
Subpart Q—Safety Programs
§ 56.18009 Designation of person in charge.

