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为检阅全省重点有色矿山机械化作业线掘进的成绩,推动矿山机械化工作的全面开展,提高机械化作业线掘进技术水平,并为1981年参加全国有色矿山机械化作业线掘进技术表演赛做好准备,湖南省有色金属工业公司和省冶金工会,于1980年11月,在桃林铅锌矿举行了第三届平巷作业线掘进技术表演赛。参加比赛的有10个重点有色矿山(矿务局)的掘进代表队,有6个重点有色矿山派了代表观摩学习。这次技术表演赛,掘进坑道
In order to review the achievements of the key non-ferrous mining mechanization operations in the province, promote the mechanization of mining operations and improve the technical level of mechanized operation, and prepare for the 1981 National Non-ferrous Mining Mechanization Operation Tunneling Technology Exhibition, Hunan Province Nonferrous Metals Industry Corporation and Provincial Metallurgical Union, in November 1980, held the third tunneling technology show at the Taolin Lead-zinc Mine. Participate in the competition of 10 key non-ferrous mining (Mining Bureau) of the tunneling team, there are six key non-ferrous mines sent representatives to observe the study. This technical show match, tunneling