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冶金部矿山司于1988年5月11日至13日,在邯郸市主持召开了玉石洼铁矿采矿技术攻关成果鉴定会。该课题是由东北工学院和玉石洼铁矿共同完成的。鉴定委员会认为,历经三年的采矿技术攻关,圆满地完成了冶金部下达的包括采场地压、巷道掘进和支护以及采矿方法等三个方面的攻关任务,在采矿生产技术及生产管理方面都取得了明显的进展,安全生产条件得到了较大的改善;试验区段的各项主要技术经济指标均有好转,特别是矿石回收率创建矿以来最高水平,从攻关前的51.39％提高到101.92％(包括回
Ministry of Metallurgical Mining Division in May 11, 1988 to 13, held in Handan City Jade Wa Wa iron mining technology research results appraisal meeting. The subject is completed by the Northeast Institute of Technology and Jade Wa Wa iron ore. Appraisal Committee believes that after three years of mining technology research, the successful completion of the Ministry of Metallurgical issued including underground pressure, roadway tunneling and support and mining methods in three aspects of research tasks in mining technology and production management are Significant progress has been made and safety and production conditions have been greatly improved. All major technical and economic indicators of the trial section have improved. In particular, the ore recovery rate has risen from 51.39% before the establishment of the mine to 101.92% % (Including back