053-5 Wyo. Code R. §§ 77.201-1 - Test 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.
Notes
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