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right Taverny Air Base (formerly ''Base Aérienne 921 "Frères Mahé" de Taverny'') is located in the communities of Taverny and Bessancourt in the Val d'Oise département of France, twenty kilometers north of Paris. Until 2011 it was the headquarters of the French Air Force nuclear strike force, with an underground command center. The base is divided into three tiers with an area of approximately 15 hectares: *The first tier is underground in a former gypsum quarry beneath the Forest of Montmorency. The facility comprised the hardened command facility for the French Air Force. *The second tier is on the surface, and provided support services for the underground command center. *The third tier is at the top of the hill, with facilities for secure military communications. There were no aviation facilities apart from a heliport. == Description == The base is located on the flank of the heights of the community of Taverny, with the hardened facility between 70 and 80 meters below the surface in the former quarries. The tunnels are large enough for trucks to enter. The underground climate is described as warm and dry, but the tunnels require monitoring for water penetration and dissolution of the gypsum.〔Magazine ''Vivre en Val-d'Oise'', n°92, juin-juillet-août 2005, p 49.〕 Somewhat more than 1000 personnel are employed at the base. The facility is provided with backup power and an independent water supply. A 2000m² Faraday Cage was completed in 1993 after six years of construction 〔Magazine ''Vivre en Val-d'Oise'', n°92, juin-juillet-août 2005, p 50.〕 - one of the largest in Europe. 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「Taverny Air Base」の詳細全文を読む スポンサード リンク
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