Representatives of Allied nations gathered for Potsdam Conference at Schloss Cecilienhof Palace in Potsdam, Germany during World War II. Fleet Admiral of the United States Navy William Daniel Leahy,General of the United States Army George Catlett Marshall, Premier of the Soviet Union Joseph Vissarionovich Stalin,Marshal of the Soviet Union Georgy Konstantinovich Zhukov and staff arrive by car. Guards salute as they enter the building. President of the United States Harry S. Truman and United States Secretary of States James Francis Byrnes arrive by car. Prime Minster of the United Kingdom, Winston Leonard Spencer Churchill welcomes them. Photographers take photographs. Trees seen in the background.
U.S. President Harry S. Truman delivers a speech following the dropping of the atomic bomb on Hiroshima, Japan, during World War II. U.S. President Harry S. Truman seated at desk in cabin of a ship. He reads prepared speech stating that a single American aircraft dropped one atomic bomb on Hiroshima and destroyed its usefulness to the enemy. He reminds listeners that the Japanese began the war from the air at Pearl Harbor. He speaks about the U.S. Armed Forces and the production of atomic bombs in the United States. The President states that the U.S. is now prepared to completely destroy every productive enterprise of Japan, by bombing Japanese docks, factories, and communications. Truman states that the U.S. shall completely destroy Japan's power to make war. President Truman notes that acceptance of the Ultimatum of July 26th issued at Potsdam, could have saved the Japanese people much suffering. But it was rejected by Japan's leaders. He states that the U.S. have spent more than two billion dollars on the greatest scientific gamble in history and have won. This is due to the greatest achievement of organized science in history.
Activities the day before the Trinity nuclear test conducted at White Sands Missile Range (USAAF Almogordo bombing and gunnery range) in the Jornado del Muerto desert of New Mexico, during World War II. This is for the the first atomic bomb test; and first ever detonation of a nuclear weapon in history. View of the White Sands Missile Range,the testing site for Trinity nuclear test. Mountains seen in the background. Men aboard a truck loaded with the plutonium core nuclear device nicknamed "Gadget". Men attach the gadget to hook of a crane. Crane hoists the gadget from truck and place it on ground. Men assemble the gadget.
Activities prior to the Trinity nuclear test conducted in the Jornado del Muerto desert of New Mexico during World War II. Crane lifts a tent canvas. Man lifts a ladder and places it to climb on the steel tower. The plutonium core nuclear device nicknamed the "Gadget" seen on the ground. It is the first atomic bomb test device. This is the day before the first detonation of a nuclear weapon in history. Men prepare for final arming of the device. Man climbs up a ladder to tower. Other men stand on a tower. Drape to cover the bomb is prepared.
Activities the day before the Trinity nuclear test conducted at Alamogordo in New Mexico during World War II (part of the Manhattan Project). Technicians and physicists work inside a tent erected on the test tower platform in the Jornado del Muerto desert test site. The men perform final arming of the plutonium core nuclear implosion device nicknamed the "Gadget". White duct tape seen in use in places on and in the enclosure; as a adhesive since welding would be prohibitive. They attach the Gadget, the first atomic bomb in history, to a crane hook. Persons seen in the footage include Herbert Lehr and Louis Slotin. Also seen is Robert Oppenheimer at 0:38-0:40 wearing a soft brimmed hat, shirtsleeves rolled up to elbows, and ID badge at center of chest. Oppenheimer is seen again, no longer wearing hat (now holding it in his right hand), in blue collared shirt, standing behind the device from 1:13 to end of clip.
Activities prior to the Trinity nuclear test conducted at Alamogordo in New Mexico during World War II. This is the day before the first ever atomic bomb test in history (the first ever detonation of a nuclear device). The plutonium core nuclear device nicknamed the "Gadget" being raised up to the top of the steel tower after final assembly. Men arrange drum shaped cushioning pads on platform, under the device, as the hoisting begins, and cover the pads with canvas tarps. The Gadget atomic bomb being hoisted to the top of a 20 meter steel tower for detonation early the next morning.
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