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受冶金部矿山司委托,全国锰矿技术委员会于1989年7月11日在长沙主持召开了“鹤庆锰矿地压活动规律和采矿方法研究方案论证会”,共有五个单位的11位专家参加了此次会议。
Commissioned by the Ministry of Metallurgical Minerals Division, the National Manganese Mine Technical Committee held in Changsha on July 11, 1989 presided over the “Heqing manganese ground pressure activities and mining methods research program demonstration will be” a total of five units of 11 experts participated in This meeting