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据Pegaus黄金公司和储金公司的顾问菲力普M.兰德斯卓报道,可能是世界上最大的和含金品位最低的堆浸生产在蒙大拿的小落矶山蓬勃开展。今年预计将从360万短吨的矿石中堆浸出7万盎司黄金。1982年从387.3万短吨开采的矿石中堆浸出6.7万盎司金和14.5万盎司银。据估计,用于堆浸的矿石平均品位经估算为0.030盎司金/短吨,而1982年为0.037盎司金/短吨。预计今年还将回收12.5万盎司银。 Pegasus黄金公司是通过两个子公司(Zortman和Landusky采矿公司)来经营该联合企业的。Zortman和Landusky两个露天矿山位于一座山的两侧,相距3.5英里。
According to Phillip M. Landerstroh, a consultant with Pegaus Gold and Vault, it is probable that the world’s largest and gold-bearing heap leachate is thriving in the Little Rocky Mountains of Montana. This year it is estimated that 70,000 ounces of gold will be heaped from 3.6 million short tons of ore. In 1982 hedged 67,000 ounces of gold and 145,000 ounces of silver from 3.87 million short tons of ore mined. The average grade of ore used for heap leaching is estimated at 0.030 ounces gold / short ton, compared with 0.037 ounces gold / short ton in 1982. It is estimated that 125,000 ounces of silver will be recovered this year. Pegasus Gold operates the consortium through two subsidiaries, Zortman and Landusky Mining. The two open pit mines Zortman and Landusky are located on both sides of a mountain, 3.5 miles apart.