Railway plant interior: MSs of workers at a spinning drilling machine. MS of man at work, of steam coming out of big vessel, man taking off the lid and checking the liquid inside. PAN and ZOOM OUT on a general view of machinery. HAS of same. MCS of man welding. ZOOM OUT on general view of machinery. CS of girls photos to ZOOM OUT HASs of plant. Various MCS and HASs of men wearing helmets, drilling, screwing. Several MCSs of men working on mechanical machine, machine pounding metal piece into shape, hot metal piece being removed by equipment with chains.