RTZ 公司的子公司肯尼科特,今年年初宣布了一项2.27亿美元的扩建计划,将使其在犹他的铜企业增产3.5万 t/d 矿石。据报道,靠近盐湖城的宾厄姆坎雍矿25年的服务年限,不会由于增加上述采出量而缩短,因为废石也将同矿石一样进行选别。1988年肯尼科特公司已耗资4亿美元对犹他铜企业进行了重大改造,该工程的计划已在1987年11月号《Min Mag·》408～415页作过描述。改造项目包括采场破碎站、破 Kenny Kotter, a unit of RTZ Inc., announced earlier this year a $ 227 million expansion plan to increase its copper plant in Utah by 35,000 t / d of ore. It has been reported that the 25-year service period at Bingham Khamul, near Salt Lake City, will not be shortened by the increase in production as the waste rock will also be sorted as ore. In 1988 Kenny Cote had spent 400 million U.S. dollars on a major transformation of Utah’s copper business, the project’s plan was November 1987 “Min Mag” 408 ~ 415 described. Transformation projects include stope crushing station, broken