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将Tamrock Herbert钻机的中心固定式钻架改装成倾斜58°后,就可适用于在挪威北部Bjφrnevatn矿的倾斜矿层和狭窄台阶上钻孔。 Bjφrnevatn矿由政府补贴的Aktieselskabet Sydvaranger采选公司经营,该矿约8
Retrofitting the center stationary rig of the Tamrock Herbert rig with an inclination of 58 ° is suitable for drilling holes in shallow bevels and narrow steps in the Bjørnevatn mine in northern Norway. The Bjørnevatn mine is run by Aktieselskabet Sydvaranger, a government-subsidized mining company, which operates about 8