Munitions manufacture in Germany. Guide rings are formed and fastened into grooves around munitions casing. Casings are stood on their bases in molds. Molten metal is poured into the molds. Casings with molded metal on bases are removed and placed into lathe where guide rings are machined. Metal chips fly off the lathe during this process. The guide rings are further machined with rotary milling machine. A woman grinds casing surfaces in a machine. Casings are given water pressure checks. Water spouts from a defective casing. Munition casings are cleaned and packed.
Dropping of a Mark 25 Aerial mine in Japan. 21st Bomber Command base at an island in the United States. The Mark 25 mine at the base. Hydro static devices, an extender and a clock delay mechanism. Mines loaded onto B-29 planes. They are dumped on trailers and a parachute is attached to after end. Explosive charge, the extender and the clock mechanism are put in a safety lock. A water soluble washer is attached. An officer specify an enemy area on a map. Group commanders are briefed. A B-29 plane takes off. The bombing door opens on the target. The mine is dropped. The parachute opens. The mine drops in water. (World War II period).
Aerial views of Grand Canyon gorge with Colorado River at its base in United States. A railroad train passes in background, as seen from highway. The Grand Canyon with Colorado River flowing at its base. A recreational vehicle camper (RV) driving along a highway. Glen Canyon Dam across River Colorado at the Grand Canyon. Cars move on a 4-lane divided Interstate Highway.
Aviation activities of American Expeditionary Forces in France during World War I. Various buildings at a base in France. French gunner test fires an aircraft machine gun from a test stand. Men load food supplies onto a truck. Various buildings and aerial views of the military base. The aerial photograph aircraft returning and landing on a field.
Auxiliary Motor Minesweeper (YMS) sweeps water off mines in Noumea, France during World War II. A LCM (mechanized landing craft) along side YMS (Auxiliary Motor Minesweeper). Pigs in well deck of the LCM. Two Electricians Mates attach pigs to flag poles. On of them puts a bolt into the base of the pig to hold the flag pole. Electrician's Mate puts flagpole in the base of a pig and ties a string to it. Three pigs afloat in water. Two men wearing life jackets and helmets drop an anchor and then a pig into the sea. Mines explode on the water surface. YMS shoots at the mines. Electrician's Mate put pigs over the side of the vessel. Men fire 3 inch gun aboard the YMS and an explosion occurs in the background.
The Washington's Monument in Washington DC. The Equestrian Statue in the foreground. Tourists stand at the base of the monument. They enter an elevator at the base of the monument.
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