Title 30
SECTION 77.201-1
77.201-1 Tests for methane; qualified person; use of approved device.
§ 77.201-1 Tests for methane; qualified person; use of approved device.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.