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barricade belt BOOSTER FAN build carbon monoxide Carrying a disabled Check-in and Check-out Check-out System Coal Mine Maps coalbed crew difﬁcult disabled person disaster elevator emergency situations Equipment Escape Facilities escape shaft escapeway drill escapeway system exit Figure ﬁlled ﬁre at Point ﬁre door ﬁre drills ﬁre occurred ﬁre or explosion ﬁres and explosions gases Haulageway Health and Safety inhalation of carbon intake ainivay intake air ladders or stairways Large water holes ldaho silver ln addition ln mines ln Section ln some slope location of escapeways Metal and Nonmetal MSHA National Mine Health non-coal mines number of persons pamphlet practice drills prevent rapid evacuation refuge chambers Rescue RETURN AIR Safety Academy Safety Manual seam Secretary self-contained self-rescue device SIDE DRIFT smoke special man trip surface Throughout mining history track haulage entry transportation trapped miners travelway Trip Cars Trolley Wire underground hoist ventilating air West Virginia