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Project Rio Blanco was an underground nuclear test that took place on May 17, 1973 in Rio Blanco County, Colorado, approximately 36 miles (58 km) northwest of Rifle.〔(Rio Blanco Site Fact Sheet ), DOE Office of Legacy Management〕 Three 33-kiloton nuclear devices were detonated nearly simultaneously in a single emplacement well at depths of below ground level. The tests were conducted in fine-grain, low-permeability sandstone lenses at the base of the Fort Union Formation and the upper portion of the Mesaverde Formation. This was the third and final natural-gas-reservoir stimulation test in the Plowshare program, which was designed to develop peaceful uses for nuclear energy. The two previous tests were Project Gasbuggy in New Mexico and Project Rulison in Colorado. The United States Atomic Energy Commission conducted the test in partnership with CER Geonuclear Corporation and Continental Oil Company. A placard, erected in 1976, now marks the site where the test was conducted. The site is accessible via a dirt road, Rio Blanco County Route 29. ==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「Project Rio Blanco」の詳細全文を読む スポンサード リンク
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