053-3 Wyo. Code R. § 57.22226
Current through April 27, 2019
Tests for methane shall be conducted in the mine atmosphere by a competent person-
(a) At least once each shift prior to starting work in each face and raise; and
(b) Upon initial release of gas into the mine atmosphere from boreholes.
053-3 Wyo. Code R. § 57.22226