Exterior shot of a factory. Underground shots of "continuous miner" at work, of operator, of business end of "miner" gouging potash chunks out of vein. Shot of unrefined potash moving on conveyor. Exterior and interior shots of refinery (IMC Canada). CUs of potash on flotation cells, being refined. CUs of men supervising. HASs of refinery bins, covered conveyors. Shots of potash train moving past camera. Interior shot of bin, pile of coarse grade potash, man walking on it.