论文部分内容阅读
塞浦路斯西雅里塔（Sierrita）公司在美国亚利桑那州图森南部的西雅里塔和双峰（TwinButtes）两座露天矿开采铜、铀矿石。两矿均系60年代后期投产，开来深度均超过460mo1993年1月以来，西雅里塔矿开始采用Caterpillar992C型遥控装载机，并已证明用这种装载机能改善西雅里塔的作
Cyprus Sierrita Company mines copper and uranium ore at two open pit mines in the West Tower and TwinButtes in southern Tucson, Arizona. Both mines were put into operation in the late 1960s, reaching a depth of more than 460 m. Since January 1993, the Caterpillar 992C remote loader has been used in the West Tower Mine and it has been demonstrated that this loader can improve the operation of the West Tower