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美国兰奇勘探开发公司埃斯卡兰特矿和选厂位于犹他州西南,于1981年10月投产,1982年1月月产银锭已达10万盎司以上,当全面投产时必将成为美国原银的最大生产厂家之一。那时,年产银将为150万盎司,而选厂只要稍加改建,年产量可能达到225万盎司。矿床为近于垂直的急倾斜石英脉,走向长3500英尺,主要矿物为硫化银和氯化银,
The United States Lance Qi exploration and development company Escalante ore and processing plant is located in southwestern Utah, put into operation in October 1981, in January 1982 monthly silver ingot has reached more than 100,000 ounces, when fully operational will become the United States Silver one of the largest manufacturers. At that time, the annual output of silver will be 1.5 million ounces, while the mill will be slightly rebuilt with an annual output of 2.25 million ounces. The deposit is near-vertical, steep-grained quartz veins, which run 3500 feet long and contain mainly silver sulphide and silver chloride,