Mining coal (Cape Breton, 00/00/1945): shots of coal miners in mine hacking coal from side faces with picks, of man sounding for slides (safety measure). Shot of miners lending coal onto conveyor in mine with bare hands. Shot of miners leaving mine shaft in ore cars. CU of coal being shovelled into loading chute, TILT DOWN to coal sliding into ship's hold. Shot of train of ore cars leaving coal refinery sheds.