Tank Factory: vertical DOLLY HAS over chasis structures of tanks on assembly line. MS of motor being lowered into tank. Exterior shots of two Sexton Tanks being tested in field at Petawawa, tanks being fired, CU of "Passed Inspection" tag on tank, of tanks moving up steep ramp during testing manoeuvres. Shots of workers in factory placing front drive cog wheel on axle of tank, of track being put into position for installing. Exterior shots of Sexton tanks being tested at Petawawa Cmap in Ontario, tanks being driven along dirt road, clouds of dust rising as tank pass by, of tanks moving across scrubland. Shot of three workers using hook to adjust track on tank in factory. DOLLY HAS over assembly lines in tank factory. Shot of tank being moved off assembly line by crane. Shot of gun being lowered onto crown of tank under construction. Shot of man welding front shield on Sexton tank. Shots of men assembling, welding tanks.