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VS factory workers throwing scrap metal and shoveling coal into furnace / molten steel pouring out of furnace into vat / molten steel pouring out of vat into container / worker turning wheel to tilt vat / worker standing next to vat as it pours molten steel into container / workers placing molten steel pieces into presses / close shot of molten steel pieces being pounded by press / two workers with masks on operating press / CU steel pieces being pounded by press / VS workers hitting levers on machines with sledgehammers / gloved hands of worker shaving piece of steel in machine / worker wearing helmet kneeling and welding piece of steel / VS workers kneeling and riveting / acetylene torch cutting hole in piece of steel / VS worker wearing helmet cutting steel with acetylene torch / sparks flying / VS large steel shaft rotating / worker doing something while standing next to rotating shaft / VS machinery in operation / long bar of molten steel / large steel shaft held by cables being lowered / VS CU men working / VS workers pounding levers on machine with sledgehammers / pieces of molten steel in press / machine reaping wheat in field / thin strip of steel rolling along conveyor belt / VS hands on dial of clock going around rapidly superimposed over hands of man working in steel mill and smoke pouring from smokestacks / CU hands of clock going around rapidly superimposed over clouds in sky, over workers walking alongside steel mill, over smoke coming from steel mill / clock pendulum swinging back and forth superimposed over smoke from steel mill drifting across sky / men welding at night outside mill / man walking guard at night while two men work on machinery / CU hands on dial of clock going around rapidly superimposed over man kneeling inside large pipe using welding torch / CU hands on dial of clock going around rapidly / CU metronome superimposed over three shots of men working with machinery in mill / Note: exact year not known