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在批林批孔运动深入发展的大好形势下,冶金部黑色金属矿山技术情报网于1974年6月26日至29日在旅大市召开了露天矿大区多排微差爆破情报交流会。参加会议的有全国部分大中型黑色金属露天矿,有关炸药、雷管生产工厂,科研、设计、院校等共62个单位117名代表。会议以批林批孔为纲。代表们首先认真学
In the excellent situation of further development of the pro-Lin hole movement, the Metallurgical Department’s Ferrous Metals Technical Information Network held a series of exchange meetings of several milliliters of demolition blasting information in the open-air mine area at Luda University from June 26 to June 29, 1974. Some of the large and medium-sized ferrous metal open pit mines in the country participated in the conference, and 117 representatives from 62 units including explosives, detonator manufacturing plants, scientific research, design and institutions. Meeting approved Lin holes as the key link. The delegates first studied hard