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美国新墨西哥州钼业公司的奎斯塔(Questa)选矿厂处理露天矿开采的矿石,露天矿结束以后关闭了一段时间。新的Goat Hill地下矿山于1978年开始建设,选矿厂亦进行改扩建处理地下开采的矿石。Goat Hill地下矿山矿石储量1.24亿吨,矿石平均品位0.294％
The Questa concentrator at the Molybdenum Company in New Mexico handles the ore mined in the open pit mine and the open pit mine has been closed for some time. The new underground mine at Goat Hill started construction in 1978 and beneficiation plants are also rebuilding and processing the underground mined ore. Goat Hill underground mine ore reserves of 124 million tons, the average ore grade of 0.294%