翻訳と辞書 Words near each other ・ Grandview Gardens, West Virginia ・ Grandview Heights ・ Grandview Heights High School ・ Grandview Heights Historic District ・ Grandview Heights, Alberta ・ Grandview Heights, Edmonton ・ Grandview Heights, New Zealand ・ Grandview Heights, Ohio ・ Grandview High School ・ Grandview High School (Aurora, Colorado) ・ Grandview High School (Washington) ・ Grandview Independent School District ・ Grandview Island ・ Grandview Lookout Tower and Cabin ・ Grandview Medical Center ・ Grandview Mine ・ Grandview Municipality ・ Grandview Park ・ Grandview Park Baptist School ・ Grandview Plaza, Kansas ・ Grandview railway station ・ Grandview Speedway ・ Grandview Steelers ・ Grandview Township ・ Grandview Township, Edgar County, Illinois ・ Grandview Township, Ford County, Kansas ・ Grandview Township, Louisa County, Iowa ・ Grandview Township, Lyon County, Minnesota ・ Grandview Township, Washington County, Ohio ・ Grandview Trail 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 Grandview Mine ： ウィキペディア英語版 Grandview Mine The Grandview Mine, also known as the Last Chance Mine, was operated by Pete Berry from 1892 until 1901 in what later became Grand Canyon National Park. The Grandview Mine Historic District includes what remains of the mine workings and machinery as well as the ruins of a stone house and sleeping shanty. Physical evidence, including low stone walls and construction debris, suggests that several wood structures were also originally present on the site. Pete Berry established Last Chance Mine on Horseshoe Mesa in 1892. He constructed the four-mile Grandview Trail down to the copper mine, and in 1893 began hauling ore out by mule. Although the ore was over 70% pure copper and won a prize at the Columbian Exposition in Chicago, the mine did not prove profitable, and in 1901 Berry and his partners sold it to the Canyon Copper Company, who operated it until 1907. The mine was then acquired by William Randolph Hearst, who sold it to the National Park Service in 1940. The mineralization at the mine is secondary copper minerals in a breccia zone along a monocline flexure in Navajo Sandstone. Redwall Limestone is bleached, brecciated and marbleized. Grandview is the type locality for grandviewite, a copper aluminium silicate.〔(Grandview Mine data ) at Mindat.org〕〔(Grandviewite on Mindat )〕 Grandview produced exceptionally fine mineral specimens of cyanotrichite, brochantite, chalcoalumite, and many other copper and uranium minerals. These specimens are now rare, as mineral collecting is not permitted in the National Park.〔 In 2009, the mines were gated to protect bat roosts, support on-going bat research, preserve historic mine resources, and promote visitor safety. The gating project was done by Mine Gates, Inc., with support from Grand Canyon National Park, Bat Conservational International, and Freeport-McMoRan. Details of the mine site, as well as manufacturing and installation of each bat gate are documented on the MineGates site.〔(MineGates )〕 ==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「Grandview Mine」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.