Visual of chemical plant in Saskatoon, LAS of worker unbolting lid of tank car. CS of warning sign “CHLORINE”. Shot of worker wearing hard hat and hearing protection, mixing chemicals in test tubes. CS of signs indicating “SULFURIC ACID AREA” , “EYE WASH FOUNTAIN” and “CONTAMINATED WATER”. CS of dials on control panel. MS of maze of pipes and tubing inside plant, of water dripping on floor.