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发明名称
OPENCAST MINING METHOD FOR HORIZONTAL AND GENTLY PITCHING DEPOSITS
摘要
申请公布号
SU1740671(A1)
申请公布日期
1992.06.15
申请号
SU19904824992
申请日期
1990.05.14
申请人
VAGOROVSKIJ VALENTIN S,SU;KONOSHCHENKOV ALEKSANDR,SU
发明人
VAGOROVSKIJ VALENTIN S,SU;KONOSHCHENKOV ALEKSANDR I,SU
分类号
E21C41/28
主分类号
E21C41/28
代理机构
代理人
主权项
地址
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