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英古列茨采选公司露天矿铁矿床的矿山地质和水文地质条件比较复杂。开采初期,采用БC-1M型钢绳冲击钻机穿孔。随着该公司投产,开始强化采掘工作。此时,钢绳冲击式穿孔方法的技术潜力已不存在,并且现有的БC-1M型钻机已无法保证为开采准备出足够数量的矿岩。为此,必须用更加现代化的高效率钻孔设备取代陈旧的低效率的钢绳冲击式钻机。 1965年,该矿已装备了CБO-160/20型火钻,并从1966年开始应用CБШ-250型牙轮钻机。
The geological and hydrogeological conditions of the mine in the open-pit iron ore deposits of the Angulots mining complex are complex. Early mining, using БC-1M steel wire percussion drill perforation. As the company went into operation, it began to intensify its extractive work. At this point, the technical potential of the percussion piercing of steel wire rope no longer exists, and the existing БC-1M drills have no guarantee that a sufficient number of ore rock will be prepared for mining. To do so, it is necessary to replace older inefficient steel cable percussion drills with more modern and efficient drilling equipment. In 1965, the mine was equipped with a CБO-160/20 fire drill and the CБШ-250 was started in 1966.