Chrysler tank arsenal. A trainload of complete M-3 tanks roll away from the huge Detroit Chrysler tank arsenal, to be delivered to the Army. Each of these tanks weigh over twenty-eight tons. The camera shows only the rear of the tank in the foreground. Note the 150 calibre machine gun. Three other machine guns, a 75mm. gun and a 37mm. anti-aircraft gun are also mounted on the steel giant