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Lost Horse Mine : ウィキペディア英語版 | Lost Horse Mine
Lost Horse Mine is a historic gold and silver mine in the Lost Horse Valley of Joshua Tree National Park.〔Lost Horse Mine, Joshua Tree National Park, National Park Service, ( Lost Horse Mine )〕 Between 1894 and 1931, it produced 10,000 ounces of gold and 16,000 ounces of silver.〔 It was first developed by Johnny Lang, then by J.D. Ryan.〔 Scarce resources for steam powered pumps and mining equipment, led to denuding the local mountains of trees, which is still clearly visible in 2014.〔 ==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「Lost Horse Mine」の詳細全文を読む
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