Workers crate finished gun mounts for 20mm Oerlikon guns at General Motors plant in Pontiac, Michigan. Naval officer and shipping foreman inspect mounts to be crated. Workers board up crates of mounts. Workers on gun barrel production line, rough turning barrels before bore is drilled. Rough-turned barrels on conveyor, barrels put on lathe for turning. Workers at machine drill bores. Drilling machines with truck of barrels in the background. Worker at drilling machine. Views of workers at chambering machines. View of Gun testing range, naval officer and plant superintendent examine gun mechanism during test firing. (World War II period).
Workers enter General Motors Plant, Pontiac in Michigan. Overhead World War II United States propaganda sign reads 'This is Our Busy Day War's Working for Uncle Sam'. Exterior of the Plant shows flag pole with 'E' pennant and Ordnance flag. Automobiles parked in the compound.
Government inspector makes final check of gun at General Motors Plant in Pontiac, Michigan. Navy anchor stamped. Rout tag. Officer and inspector stand near completely assembled gun and mount. They examine blueprint and point to gun parts.
Various steps of truck manufacturing, at a General Motors factory in Pontiac Michigan, United States. Workers at a factory work on pistons of engine cylinders. Shaping and milling machines work upon the pistons. Drilling oil holes in the pistons. Workers inspect and weigh pistons precisely. Comparison of sizes of truck and a car. Hollow cut section of a pistons of truck.
Various steps of truck manufacturing, at a General Motors factory in Pontiac, Michigan, United States. Workers at a factory work on forging the layout of truck crankshaft Machines work upon heated metal pieces to form a crankshaft. Machining stages of the crankshaft. Workers inspect and precisely measures its lengths with a ruler. Comparison of crankshaft sizes of truck and a passenger car.
Various steps of truck manufacturing, at Pontiac, Michigan factory of General Motors Company in the United States. Workers at a factory work on manufacturing a truck camshaft. The camshaft under process, drop forged. Adding carbonizing material to it. Surface reheated and quenched. Finishing touches by workers. Workers inspect and precisely measures its uniformity with sensitive meters
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