1986年12月25日,在山西大同矿务局由煤炭部技术发展司主持对“大同煤合理洗选利用研究”的成果,进行了技术评定。参加评定会的共有50人。“大同煤合理分选利用的研究”系1983年国家经委下达的“六五”攻关课题,经过近四年的调查、试验研究工作,取得了较好的成果,达到了预期的目标。评定会上,煤炭科学研究院唐山分院和大同矿务局共同提出了“大同煤合理分 On December 25, 1986, Datong Mining Administration of Shanxi Province conducted a technical assessment on the achievement of “Research on Rational Datong Coal Washing and Utilization” sponsored by the Ministry of Coal Industry Technology Development Department. A total of 50 people will participate in the assessment. “Datong coal rational use of research” Department of Economic Commission in 1983 issued “Six-Five” research topic, after nearly four years of investigation, experimental research, and achieved good results, reaching the desired goal. Assessment meeting, Coal Research Institute Tangshan branch and Datong Mining Bureau jointly put forward the "Datong Coal reasonable points