论文部分内容阅读
金熊主矿区于1981年被切夫龙标准公司的全资子公司切夫龙矿物公司发现。工业生产始于1990年1月,日处理能力为30t。选矿厂投产时的一些问题使1990年的金产量仅有19,242盎司,但1991年时提高到56,712盎司,1992年又再增至58,224盎司。1993年7月公司所有权的重大变更使当年的产量下降至52,357盎司,但新的公司拥有者强调矿体的大量开发和堆浸技术的引入,估计1995年的金产量可达70,000—75,000盎司。到目前为止的金产量大多来自已近枯竭的贝尔主区,但1994年下半年的产量则多来自金矿的第一座堆浸设施。堆浸矿石来自科迪阿克“A”号矿体的露天采场,该矿体于1993年10月被发现,即仅在新公司接手经
Golden Bear main mining area in 1981 by Chevron Standard Co., a wholly owned subsidiary Chevron Mineral Company found. Industrial production began in January 1990, the daily processing capacity of 30t. Some problems with the concentrator’s commissioning led to a production of only 19,242 ounces of gold in 1990, up from 56,712 ounces in 1991 and another 58,224 ounces in 1992. Major changes in ownership of the company in July 1993 brought the current year’s production down to 52,357 ounces, but new company owners emphasized the extensive exploitation of ore bodies and the introduction of heap leaching techniques, with gold production in 1995 estimated at 70,000-75,000 ounces. Much of the gold production so far comes from the already depleted Belle main zone, but most of the output in the second half of 1994 came from the first heap leach facility in the mine. The heap leach ore came from the open pit of the Cody Ark “A” ore body which was discovered in October 1993, that is, it was only taken over by the new company