芬什矿是南非最大的金刚石矿,露天开采,年矿石产量500万吨以上,但1990年将达到其经济极限深度。目前正在进行的一项主要发展规划是要使将来的地采仍能保持这个产量。露天矿芬什岩管略成圆形,表面积为17.9公顷,围岩岩壁几乎直立。覆盖层已被剥离,开采已达280米水平。采坑已剥回至其最终位置,即已降至196米台阶处。 Finch Mine is South Africa’s largest diamond mine, open-pit mining, annual ore output of 5 million tons or more, but in 1990 will reach its economic depth of limit. A major development plan currently under way is to keep future production at this level. The open pit Finch rock tube is slightly rounded with a surface area of ​​17.9 hectares and the rock wall of the surrounding rock is nearly upright. Cover has been stripped, mining has reached 280 meters level. The pits have been stripped back to their final position, that is, they have been lowered to a height of 196 meters.