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美国西北集料公司华盛顿州斯泰莱孔附近两大矿山和加工厂的合并,扩大了原料资源和生产发展远景。雷德尔国际有限公司和弧星工业有限公司把冰川砂砾矿和先驱者矿及其加工厂组合成单一的生产系统。这是一种有效的改革。由于两露天矿是并排的,且仅被一阶地隔开,在这些矿床中大小岩块互
The merger of two major mines and processing plants near the US-Northwest Agglomeration in Stryley, Washington State, has expanded the resources and production development prospects. Riddle International and Arcstar Industries combine glacial gravel and pioneer mines and their processing plants into a single production system. This is an effective reform. Since the two open pit mines are side by side and separated only by first order, the size of the rock mass in these deposits