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在1980年—1990年十年内地下小矿山的数量将增加三分之一,计增加2500个。这是福劳斯特和沙立文公司对市场的预测得出的数字。到1985年地下矿山的采矿机械的装运值将达到50,000,000美元,到1990年将达到60,000,000美元。福劳斯特和沙立文公司予计小矿山的矿石日产能力在400吨以內。在煤矿,小矿山所生产的烟煤产量将为70年代的两倍,并予计将继续增
In the ten years from 1980 to 1990, the number of small underground mines will increase by one-third, adding 2,500. This is the number of predictions made by Frost & Sullivan on the market. By 1985, the value of mining machinery for underground mines will reach US$50,000,000, and by 1990 it will reach US$60,000,000. Fort Lauster and Sullivan’s ore production capacity at Jixiao Mine is within 400 tons of Nissan. In coal mines, the output of bituminous coal produced by small mines will be twice that of the 1970s and will continue to increase