US factories increase production of war materials - good shots of American heavy industry.
Titles read: "UNCLE SAM GEARS UP!"
United States of America.
Various shots of US heavy industry factories producing weapons. Interior of iron works; sparks flying; white hot steel and molten metal being poured into moulds. Giant presses making wheels for locomotives and big guns. Brief shots of the engineers working the machinery. Commentator talks of America gearing up its war industry.