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Operation Ranger was the fourth American nuclear test series. It was conducted in 1951 and was the first series to be carried out at the Nevada Test Site. All the bombs were dropped by B-50D bombers and exploded in the open air over Frenchman Flat (Area 5). These tests centered on the practicality of developing a second generation of nuclear weapons using smaller amounts of valuable nuclear materials. They were planned under the name ''Operation Faust.'' The exact locations of the tests are unknown, as they were all air drops. However, the planned ground zero was set at for all except the ''Fox'' shot, which was "500 feet west and 300 feet south" in order to minimize damage to the control point. == References == * 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Operation Ranger」の詳細全文を読む スポンサード リンク
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