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印度尼西比弗里波特公司的俄尔茨堡露夭钢金矿是1972年以7500t／d规模投产的。从1981年到1988年经三次扩建生产能力达到2万t／d。1988年开发了格拉斯堡（Grasberg）砂岩铜矿床，选矿厂又进行一次较大的扩建，1989年生产能力增至3．2万t／d。1991年扩建了破碎筛分广，增建一个新
The Wolfgang Ursula Luyao steel mine in Freeport, Indonesia, was put into operation in 1972 at a capacity of 7,500 t / d. From 1981 to 1988 after three expansion of production capacity reached 20,000 t / d. In 1988, the Grasberg sandstone copper deposit was developed and the concentrator carried out a major expansion. In 1989, its production capacity increased to 32,000 t / d. In 1991 the expansion of the crushing and screening widening, to build a new