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煤炭工业部加工利用局和选煤科技情报中心站于1984年7月3日至6日在淮南矿务局联合召开了全国煤质选煤质量管理小组第三次成果发表大会。共有60个质量管理小组发表了成果,其中有30个小组被
The Bureau of Processing and Utilization of Coal Industry and the Information Technology Center of Coal Preparation Station convened the third conference of results of quality management of coal quality in the Coal Administration of Huainan from July 3 to June 4, 1984. A total of 60 quality management team published the results, of which 30 were