(a) A map shall be posted or readily accessible to all miners in each working section, and in each area where mechanized mining equipment is being installed or removed. The map shall show the designated escapeways from the working section to the location where miners must travel to satisfy the escapeway drill specified in paragraph (b)(1) of this section. A map showing the main escapeways shall be posted at a surface location of the mine where miners congregate, such as at the mine bulletin board, bathhouse, or waiting room. All maps shall be kept up to date, and any changes in route of travel, locations of doors, or directions of airflow shall be shown on the maps by the end of the shift on which the changes are made, and affected miners shall be informed of the changes before entering the underground areas of the mine. Miners underground on a shift when any such change is made shall be immediately notified of the change.
(b) - (1) At least once every 90 days, each miner, including miners with working stations located between working sections and main escapeways, shall participate in a practice escapeway drill. During this drill, each miner shall travel the primary or alternate escapeway from the miner's working section or area where mechanized mining equipment is being installed or removed, to the area where the split of air ventilating the working section intersects a main air course, or 2,000 feet outby the section loading point, whichever distance is greater. Other miners shall participate in the escapeway drill by traveling in the primary or alternate escapeway for a distance of 2,000 feet from their working station toward the nearest escape facility or drift opening. An escapeway drill shall not be conducted in the same escapeway as the immediately preceding drill.
- (2) At least once every 6 weeks and for each shift, at least two miners on each coal producing working section who work on that section, accompanied by the section supervisor, shall participate in a practice escape drill and shall travel the primary or alternate escapeway from the location specified in paragraph (b)(1) of this section, to the surface, to mechanical escape facilities, or to an underground entrance to a shaft or slope to the surface. Systematic rotation of section personnel shall be used so that all miners participate in this drill. An escapeway drill shall not be conducted in the same escapeway as the immediately preceding drill.
- (3) At least once every 6 weeks, at least two miners on each maintenance shift and a supervisor, shall participate in a practice escape drill and shall travel the primary or alternate escapeway from the location specified in paragraph (b)(1) of this section, to the surface, to mechanical escape facilities, or to an underground entrance to a shaft or slope to the surface. Systematic rotation of maintenance personnel and working sections shall be used so that all miners participate in this drill and the escapeways from all sections are traveled. An escapeway drill shall not be conducted in the same escapeway as the immediately preceding drill.
- (4) Before or during practice escapeway drills, miners shall be informed of the locations of fire doors, check curtains, changes in the routes of travel, and plans for diverting smoke from escapeways.
(c) The practice escapeway drills may be used to satisfy the evacuation specifications of the fire drills required by 75.1101-23.
053-4 Wyo. Code R. § 75.383