ATM underground telephone
Coal falling into a hopper
Lamp room atmosphere in a coal mine
Lift, gates close, cage descends and gates open
Nine steel counters indicting number of men to work in blind end
Opening & closing lift cage door
Pneumatic coal drill operating in a coal mine (Distant perspective)
Signalling from pit top to winding engine room, cage door closes
Signals for coal haulage conveyor belt
Tipping coal from hopper in a coal mine