冈鲍德选矿厂是于1970年3～4月份由勘察与采矿有限公司开始经营的。初期以250吨/日能力处理芒特(Mount)氧化矿露天开采矿石。在三个月内就达到了设计的处理能力1500吨/日。由勘察与采矿公司处理的80％矿石是来自芒特氧化矿,其余部分是来自马莫思(Mammoth)露天矿和少量地下开采的马莫思矿石。 Gangbold beneficiation plant was from March to April 1970 by the Survey and Mining Co., Ltd. began operating. Initially 250 mt / day capacity was used to process open-pit ores from Mount oxide ore. In three months to reach the design capacity of 1,500 tons / day. Eighty percent of the ore processed by survey and mining companies is from Mount Oxide and the rest is from Mammoth open pit and a small amount of underground mines.