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・ Choila
・ Choilley-Dardenay
・ Choinek
・ Choinumni
・ Choiny
・ Choiny, Garwolin County
・ Choiny, Lublin Voivodeship
・ Choiny, Mińsk County
・ Choiny, Ostrów Mazowiecka County
・ Choiny, Wołomin County
・ Choiny, Świętokrzyskie Voivodeship
・ Choir
・ Choir (architecture)
・ Choir (disambiguation)
・ Choir Boys
Choir Depression
・ Choir dress
・ Choir Invisible
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・ Choir of Chichester Cathedral
・ Choir of Clare College Cambridge
・ Choir of Echoes
・ Choir of Gonville and Caius College, Cambridge
・ Choir of Hope and Inspiration
・ Choir of King's College, Cambridge
・ Choir of Leeds Parish Church
・ Choir of Ormond College
・ Choir of Sidney Sussex College, Cambridge
・ Choir of St George's Chapel, Windsor Castle
・ Choir of St John's College, Cambridge


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Choir Depression : ウィキペディア英語版
Choir Depression
The Choir Depression is a depression near Choir, Mongolia. It is about 150 km long and 10 to 20 km wide, about 500 m lower than the surrounding upland. It lies at an altitude of 1269 m.
Uranium prospecting began in the Choir Depression in 1955, and the Haraat deposit (of uranium trioxide), identified in 1970, began major drilling in 1988. Following new discoveries in 1997, there is estimated to be 18 million pounds of uranium trioxide in the depression.〔(【引用サイトリンク】title=International Uranium Corporation Announces 1997 Exploration Results in Mongolia - New 10 Million Pound Uranium Deposit Delineated )〕 In early 1994, the area was licensed to the Gurvan Saihan Joint Venture, with a 70% interest by Denison Mines, and 15% each from the Mongolian government and a Russian state geological concern.〔 〕 Rail lines connect the Trans-Mongolian Railway with the mine.
==Notes==



抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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