| 翻訳と辞書 |
| Highland Valley Copper ： ウィキペディア英語版 |
Highland Valley Copper mine
The Highland Valley Copper mine is the largest open pit copper mine in Canada, located near Logan Lake, British Columbia.
==Info==
Highland Valley Copper was known to be in the Cascade Mountains near Princeton as the productive mines of Allenby in 1914. On the strength of this,
prospectors fanned out searching other deposits. They found these north of Merritt and east of Ashcroft at Logan Lake. The deposit was large, but of low-grade copper ore (less than 1 percent). The mines sat, waiting for the richer deposits to yield, and for technology to improve to process large amounts of ore. In 1955 the Bethlehem Copper Corporation finalized the purchase of the 141 claims in the area and partnered with ASARCO to develop the property. Diamond drilling confirmed the presence of a large ore body and mining was commenced. For fifty years, the ore was dug using shovels and open pit method. A very large pit ensued--half a mile deep and two miles in diameter.
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「Highland Valley Copper 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.
|
|