Damage caused due to Allied aerial bombings in Nagasaki, Japan. Destructed roof of the building. Mitsubishi small arms plant with ten lathes without noticeable damage by blast but have deteriorated as a result of exposure caused by the stripping of the corrugated metal from the roof. Base of a concrete stack. Damage caused to steel structure due to collapse of concrete base.
American soldiers scurry up a hill after setting gas charges at its base. Next, they are seen ready to remotely set off the charges. They do so, pressing the plungers on their detonators, sumultaneously. The charges explode at the base ot the hill and send huge white clouds of gas billowing over the hill. American soldiers on a hillside overlooking a rural area of France, fire a battery of mortars. Next, the shells are seen striking and exploding in the distance, where they create a virtual wall of gas smoke. Other shells explode, raising black smoke in the midst of the gas. In final scene, several soldiers walk cautiously, widely separated from each other, across a field of flowers, toward the retreating gas cloud, against which they are silhouetted
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.
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