TY - Gold Science and Technology A1 - CHENG Wuchang ,ZHANG Hongmin T1 - THE EXPERIMENT OF MEDIUM2DEPTH2HOLE MINING IN BRECCIA TYPED GOLD DEPOSIT OF QIYUGOU CHENG Y1 - 2002-08-28 JF - Gold Science and Technology JO - Gold Science and Technology SP - 13 EP - 16 VL - 10 IS - 4 UR - http://www.goldsci.ac.cn N1 - ER -