【本刊讯】冶金部黑色金属矿山科技情报网于1977年10月11日至15日在四川省渡口市召开了冶金露天矿山穿孔技术经验交流会。参加会议的有全国重点冶金露天矿山、科研、设计、高等院校和有关的修造厂以及一机部有关的制造厂等58个单位94名代表。会议期间,与会代表学习了“中共中央关于召开全国科学大会的通知”。会议根据我国目前潜孔钻机和牙轮钻机的研究、制造和使用等方面组织了15个单位在会上交流了经验:兰尖铁矿介绍了用好管好国产73-200型潜孔钻机和研制的稀土镁钒钛球墨铸铁柱齿潜孔钻头;大孤山、东鞍山等铁矿分别介绍了用好修改好国 【News】 Ministry of Metallurgical Ferrous Metal Mining Science and Technology Information Network in October 11, 1977 to 15 in Ferry City, Sichuan Province held a metallurgical open pit mine technology exchange experience experience. There were 94 representatives from 58 units including the key metallurgical open pit mines, scientific research, design, institutions of higher learning and related repair factories as well as the manufacturing plant related to one machine department. During the meeting, participants learned “the CPC Central Committee on the convening of the National Science Conference notice.” The meeting organized 15 units in terms of the research, manufacture and use of the current DTH drilling rigs and cone drills in China. The meeting exchanged experiences at the meeting: Lanjian Iron Mine introduced the well-managed domestic well-developed 73-200 DTH drilling rigs and Development of rare earth magnesium vanadium and titanium nodular cast iron column teeth DTH drill bits; Dagushan, Dong Anshan and other iron ore were introduced to modify the good country