翻訳と辞書 Words near each other ・ Milltown Cemetery attack ・ Milltown Dam (St. Croix River) ・ Milltown F.C. ・ Milltown F.C. (Canada) ・ Milltown GAA ・ Milltown GAA (County Galway) ・ Milltown GAA (County Kildare) ・ Milltown Halt railway station ・ Milltown Institute of Theology and Philosophy ・ Milltown International Bridge ・ Milltown Malbay ・ Milltown Malbay GAA ・ Milltown of Rothiemay ・ Milltown Public Schools ・ Milltown railway station ・ Milltown Reservoir Superfund Site ・ Milltown River ・ Milltown, Arkansas ・ Milltown, Cornwall ・ Milltown, County Antrim ・ Milltown, County Cavan ・ Milltown, County Galway ・ Milltown, County Kerry ・ Milltown, County Kildare ・ Milltown, Derbyshire ・ Milltown, Dublin ・ Milltown, Hunterdon County, New Jersey ・ Milltown, Indiana ・ Milltown, Ireland ・ Milltown, Kentucky Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Milltown Reservoir Superfund Site ： ウィキペディア英語版 Milltown Reservoir Superfund Site The Milltown Reservoir Sediments Superfund Site is part of the largest Superfund complex in the western United States. Situated in the Clark Fork River Basin, the complex stretches from the Warm Spring Ponds area near Butte to the Milltown Dam site east of Missoula. It was added to the National Priorities List in 1983 when arsenic groundwater contamination was found in the Milltown area. The contamination resulted from a massive flood in 1908 which washed millions of tons of mine waste into the Clark Fork River, ultimately ending up behind the Milltown Dam. The additional designation of the Clark Fork River between Milltown and Warm Springs Ponds in the Deerlodge Valley came in 1992.〔(EPA Milltown Reservoir Sediments page ), epa.gov; accessed May 9, 2015.〕 ==Overview== The Milltown Dam was an earth-fill gravity-type hydroelectric dam on the Clark Fork river in Missoula County, in the western part of Montana. The dam was located about seven miles east of Missoula, Montana, at the confluence of the Blackfoot River with the Clark Fork. Built in 1908 by copper mining tycoon William A. Clark, it was meant to supply hydroelectricity to his sawmills in nearby Bonner, Montana. Clark's sawmills supplied the giant timbers used to shore up the walls of the mine shafts in Butte. Since the 1870s, the Anaconda and Butte areas had been mined as one of the richest deposits of copper sulfate ever found in North America. With the dam just months old, however, a record flood on the Clark Fork washed tons of toxic mining sediment downstream, where it settled at the base of the dam to remain until remediation began, with a cumulative total of around 6.6 million cubic yards of sediment contaminated with arsenic, lead, zinc, copper, and other metals in the former reservoir bed. 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「Milltown Reservoir Superfund Site」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.