在捷尔任斯基矿务局所在矿区,随着富矿资源的枯竭,用露天法重新开采早先损失的矿石,得到了愈来愈大的发展。位于巨人-深井铁矿和萨克萨甘铁矿崩落区内的北露天矿的极限开采深度已定为250～300米。为了维持矿山的生产能力,苏联国家南方矿井设计院克里沃罗格分院完成了460～710米水平、储量为8.1亿吨的两层铁矿(磁铁石英岩)的开拓和开采设计。考虑到矿区 In the mining area where the Dzerzhinski Mining Bureau is located, with the depletion of the rich mineral resources, the open-pit recovery of previously lost ore has been greatly expanded. The northern mine, located in the Giants - Shajing Iron Mine and Saxa Gan Iron Mine, has a limit mining depth of 250-300 meters. In order to maintain the production capacity of the mines, the Kliwo Rogge Branch of the Southern State Mine Design Institute of the Soviet Union completed the exploration and exploitation of two layers of iron ore (magnetite quartzite) of 460-710 meters with a reserve of 810 million tons. Taking into account the mining area