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1986年8月26日至27日,北京铁路局在大同召开了“繁忙线路道床维修方法研究评审会”,参加会议的有北京铁路局各分局和铁道部科学研究院等单位共43人。
August 26, 1986 to August 27, Beijing Railway Bureau held in Datong, “busy line roadbed repair method research review will be” to attend the meeting of the Beijing Railway Bureau and the Ministry of Railways Branch of the Scientific Research Institute and other units a total of 43 people.