This film is presented by the United States Navy (:10). The Naval Gun Factory is spread out over 125 acres in Washington DC by the Anacostia River (:52) and is composed of about 260 buildings. It is the largest Naval armament in the world (1:25). Old cannons are poised out front of the factory as it has been an arsenal, school for midshipmen and a naval base is it’s past (1:32). An example is depicted of a work order which will be studied by various staff departments (2:06). A bird’s eye view of one of the many supply yards is shown (2:31), and materials such as plates of all sizes to be welded (2:38), ferrous and nonferrous metals (2:45) and lumber (2:49) exist here. The pattern and joiner shop (2:55) where patterns will be made into castings are shown. These electric furnaces (3:49) had the ability to produce 100 tons of steel daily. At the brass foundry (4:03) castings are being made and in the hydro blast room (4:12) sand is to be removed. The forge of the gun factory is shown (4:36) and the 2,000-ton hydraulic press in action (4:46). Method’s such as the classic blacksmith’s anvil are still used (5:02). At the boilermaker shop (5:20) turrets, carriages, and shields are among the many items to be shaped and welded. The pantograph cuts design into a steel plate (5:53). A diagram explaining how materials move from the heavy machine shops to the light machine shops (6:07) leads to the inside of the heavy machine shop (6:24). The light machine shop is shown after (7:08) as well as the tool shop of the factory (7:43). The inspection room is also known as the accuracy control center (8:30). Considerably one of the more impressive areas is the heavy gun shop (9:08) in which nearly every gun since WW1 has been created. The shrinkage pit (9:43) which is about 100 feet deep and the process of lenses being coated with low reflection film (10:45) are depicted. At the assembly shop (10:57) the final stage is completed and tests simulating field conditions are to be conducted (11:14). The Dahlgren proving grounds (11:38) are where these final products will be put to the ultimate test (11:38). Tests such as how the components operate during the vibrations of a long-range aircraft (12:20) and all atmospheric conditions in the weather testing room are completed (12:29). A bird’s eye view of the factory brings this film to conclusion and it has been another of the ‘Sea Power for Security’ (14:22).
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