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邯邢冶金矿山管理局玉石洼铁矿与东北工学院通力合作进行采矿技术攻关,经过三年艰苦努力,终于攻克了难关,促进了生产的发展。攻关的一采区1987年矿石产量达到32.66万吨,比攻关前增加40.9％,同时各项技术经济指标也均有显著好转。特别是回采率,不仅充分回收了本分段矿石,而且还回收了上部丢掉的矿石,达到134.14％,创建矿以来最高水平,
Handanxing Metallurgical and Mining Administration Jade Wa Wa iron ore and Northeast Institute of Technology co-operation in mining technology research, after three years of hard work, finally overcome the difficulties and promote the development of production. A key mining area in 1987 reached 326,600 tons of ore production, an increase of 40.9% over the period prior to the tackling of the storm. At the same time, various technical and economic indicators also improved significantly. In particular, the recovery rate not only fully recovered the sub-ore, but also recovered the top lost ore, reaching 134.14%, the highest level since the founding of the mine,