Oil Pipeline (21/06/1950): LS of pipeline and ditch across prairies. Sequence on back hoe shovel and special trench digging machine digging trench. Sequence on workers, equipment lifting pipe into position for welding, welding operation. Sequence on equipment scouring pipe and coating it with plasticised tar ready for wrapping. Shots of wrapping operation, of application of fiberglass, of weatherproof paper. LS of miles of pipeline winding across prairie. Various shots of equipment getting ready to deposit pipe into trench. Two shots of map showing plan of pipeline from Edmonton to Great Lakes, at Superior, Wisconsin.