The measures of controlling roof fall, such as combined pillar, stope partition zone and stepped stoping were adopted.
为回采顶板大面积冒顶的不稳固 6号硫化铅锌矿体 ,对冒顶原因进行了分析 ,并根据分析结果采取联合矿柱、采场分区、阶梯式回采等技术措施 ,取得良好安全生产与经济效
De Beers Consolidated Mines, Ltd.
德比尔斯联合矿业公司
National Mining and Industrial Federation
全国矿业和工业联合会
Miner's Trade Unions International
国际矿工工会联合会
Combined belt conveyer system of stope of Baiyunerbo Iron Ore Mine
白云鄂博铁矿采场矿石胶带联合运输系统
Ad Hoc Group of Experts on United Nations Criteria for Mineral Exploration
联合国探矿标准特设专家组
Federacion Sindical de Trabajadores Mineros de Bolivianos
玻利维亚矿工工会联合会
International Federation of Christian Miners' Unions
国际基督教矿工工会联合会
Research on Hongmiao Mine United Timbering of Soft Rock Coal Roadway under High Stress;
红庙矿高应力软岩巷道联合支护研究
Not until 1916 did the UMW finally win recognition from the anthracite operators.
直到1916年，美国矿工联合会才终于得到无烟煤矿资方承认。
92 ore- the combination of flotation separation and the bacterial leaching - is accessible.
92号矿原矿采用浮选分离与细菌浸出联合工艺在原理上是可行的。
Evaluate the Changing of Microhardness during the Ozone Combining Remineralization Treatment Using in Caries-affected Dentin of Deciduous Teeth;
臭氧联合再矿化技术对离体乳牙脱矿牙本质显微硬度的影响
Research on the Combined Beneficiation Process for Dephosphorization of High Phosphorus Oolitic Hematite Ore from Wushan,Taohua County
巫山桃花高磷鲕状赤铁矿联合选矿脱磷工艺研究
John D. Rockefeller, refused to surrender to the UMW.
约翰·d·洛克菲勒拒绝向美国矿工联合会屈服。
FIELD APPLICATION AND PRODUCTION BEHAVIOR OF CROSS-LINKING POLYMER FLOODING TECHNOLOGY
交联聚合物驱技术的矿场应用效果及开采特征
Numerical Analysis on Combining Mining of Steep and Close Seam in Jiangou Coal Mine;
碱沟煤矿急斜近距煤层联合开采的数值分析
Study and Application of the Combining Inversion by Elastic Wave of Parameters in the Mine Tunnel;
矿井巷道弹性波参数联合反演技术研究与应用
Of the Model: The Enterprises and the Local Governments Cooperate to Open the Joint Elementary and Middle Schools;
厂地联合办学：厂矿子弟学校办学模式探索
The Application of Grey Incidence Analysis to Optimization of Comprehensive Material Circulation of Coal Mines;
灰色关联分析法在煤矿综合物流优化中的应用
