为检阅全省重点有色矿山机械化作业线掘进的成绩,总结、交流其操作技术,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,并为明年参加全国有色矿山机械化作业线掘进技术表演赛作准备,省有色金属工业公司和省冶金工会,于80年11月1日至13日,在桃林铅锌矿举行了第三届平巷机械化作业线掘进 To review the province’s key non-ferrous mining mechanized operation of the tunneling results, sum up and exchange of their operating techniques to promote the full mechanization of mine work to improve mechanized operation of the tunneling technology, and to participate in the National Non-ferrous Mine mechanization operations next year Tunneling Technology Exhibition In preparation for the provincial Nonferrous Metals Industry Company and the Provincial Metallurgical Union, the third tunneling mechanization operation was carried out at the Taolin Lead-zinc Mine from November 1 to November 80,