30 C.F.R. § 77.201-1 Tests for methane; qualified person; use of approved device.
Title 30 - Mineral Resources
Tests for methane in structures, enclosures, or other facilities, in which coal is handled or stored shall be conducted by a qualified person with a device approved by the Secretary at least once during each operating shift, and immediately prior to any repair work in which welding or an open flame is used, or a spark may be produced.
Title 30: Mineral Resources
PART 77—MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES
Subpart C—Surface Installations
§ 77.201-1 Tests for methane; qualified person; use of approved device.
