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苏联1982年露天开采的铁矿石已占总重的84％以上。露天矿的集中强化开采使采场深度迅速增大。1980年深度超过200米的露天铁矿占18％,1985年将达到26％。今后大部分矿岩将由深度超过200米的露天矿采出。克里沃罗格矿区的情况也是如此。如“五一”露天矿现在的开采深度已达250米,安诺夫露天矿达195米,南部采选公司露天矿是210米,新克里沃罗格公司一号露天矿是245米,二号露天矿是135米,三号露天矿是220米,帕尔塔夫采选公司露天矿也深达150米。
Open-pit iron ore in the Soviet Union in 1982 accounted for more than 84% of the total weight. The intensive mining of open-pit mines makes the stope depth rapidly increase. In 1980, the open-pit iron mine with depth of more than 200 meters accounted for 18% and will reach 26% in 1985. In the future most of the ore will be produced from open-pit mines with a depth of more than 200 meters. The same is true for the Krivoy Rug Mine. Such as “51” open pit mining depth now up to 250 meters, An Nofu open pit mine up to 195 meters, southern mining companies open pit mine is 210 meters, the new Kerry Vorro company No. 1 open pit mine is 245 meters, Open pit No. 2 is 135 meters, Open pit No. 3 is 220 meters, and Patav Mining Company’s open pit mine is as deep as 150 meters.