Exterior shots: MLS of metal walkway between buildings to PAN up on smokestack in background. MCU of smokestack top to PAN right on smoke. LSs of one tall and two short smokestsacks, smoke billowing from stacks. MS of train tank car in backyard area, workers walking on top, opening latch, putting in small hose line, other workers stuffing large hose in to fill tank. MS and MCS of sign "Dangerous sulphur dioxide".