Shots of worker operating lathe, including CUs of man's face and of hand measuring piece of metal. MS of man working at emery wheel. Shots of worker operating drill press showing man's face as he works, man taking piece of metal from fire, putting it in press. MS of worker welding wearing protecting mask. Shots of miners walking past camera in mine. Sequence on miners in washroom showing miners removing work clothes, putting them in baskets that are then hauled up to ceiling, man washing face and arms, other man drying with towel, other man combing his hair. Various shots of miner pushing loaded car along mine, into elevator, operating elevator, elevator going down with car. Sequence showing man holding piece of metal in fire using tongs, taking piece of metal from fire, hitting metal with hammer, including CUs of man's face and hands as he works.