Various short shots of men working in mine (camera moving a lot in some shots), of two miners moving planks and breaking rocks with iron bar, of man drilling hole in tunnel roof using rubber tubing for suction, of man pilling dynamite sticks, of man breaking rocks with iron bar, of men with head lamp standing and walking in tunnels, of man getting ready to and drilling hole making dust, of man making rocks fall in hole on ground with iron bar, of man with mask on his face drilling holes in rocks and pulling it with a substance, lighting fuses and putting them on substance in hoses. Shot of men running in tunnels (only moving head lamps visible), camera on "train" full of tin moving in tunnel. Exterior shot of camera moving on "train".