PDF(74 KB)
PDF(74 KB)
PDF(74 KB)
麻子坑采场410及420台阶基建工程硐室爆破
({{custom_author.role_cn}}), {{javascript:window.custom_author_cn_index++;}}CHAMBER BLASTING IN CONSTRUCTION OF BENCHES 410 AND 420 OF MAZIKENG MINING AREA
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