When the Saginaw plant is ope: ating at full production, it will contain 1300 different milling machines, lathes, grinders, ete. on which 1,800 separate machine operations will be performed per gun. The.30-calibre machine guns have 189 parts, some of which require as many as 66 distinct machine operations The machine guns manufactured by General Motors are air-cooled and can fire from 600 to 1400 rounds a minute, depending on type. The effective range of the 50-calibre gun is more than four miles. i Reflections from
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