30 C.F.R. § 57.18025 Working alone.
Title 30 - Mineral Resources
No employee shall be assigned, or allowed, or be required to perform work alone in any area where hazardous conditions exist that would endanger his safety unless his cries for help can be heard or he can be seen.
Title 30: Mineral Resources
PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES
Subpart Q—Safety Programs
Underground Only
§ 57.18025 Working alone.

