United States naval proving grounds in Dahlgren, Virginia. Flak burst as anti aircraft guns are fired. Explosions occur in water. A building at the proving grounds in Dahlgren, Virginia. Men inside the building make preparations to fire a 5 inch projectile in a pit having a diameter of 25 feet. A man places a projectile in a box and after the detonation wires are checked the pit is filled with sawdust. Sawdust is dampened with water. Saw dust being detonated. Saw dust pass through various machines as fragments are recovered. A magnetic roller being used to recover fragments. Fragments being weighed and sorted. Men work on machines as they sort out fragments. Fragments being arranged and photographs taken to keep a record.
United States naval proving grounds in Dahlgren, Virginia. A ship with snow on its deck underway at sea. A man works on controls at the naval proving grounds in Dahlgren, Virginia as he tries to maintain temperature and altitude. Men in the cool chamber as they work on a machine gun.
United States naval proving grounds in Dahlgren, Virginia. Photography being used to determine the rate of spin of a projectile. A man works on a micro flash camera and light flashes. As the projectile is fired two flash lights being used to take a picture. A photograph of the projectile after firing. Difference in position of projectile from one photo to another helps to establish the rate of spin.
United States naval proving grounds in Dahlgren, Virginia. Different artillery being fired under adverse conditions to test them. Smoke rises due to fire. 55 rounds being fired per minute from a 3 inch artillery gun to test its life expectancy and erosion pattern.
United States naval proving grounds in Dahlgren, Virginia. 8 inch smooth bore gun being fired at the proving grounds as smoke rises. Gun being fired at target boards. 8 inch smooth bore being fired to ensure accuracy and to save time.
United States naval proving grounds in Dahlgren, Virginia. A Mark -108 rocket launcher as rockets are being launched from it. Color photo cameras being used to record flight characteristics of a missile so as to determine trajectory. Men look through camera lenses as they record elevation of a missile. Men use high speed tracking cameras for the purpose. A photograph of an aircraft with a clock.
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