African Copper is studying plans to develop an underground mine in order to exploit deeper sulphide mineralisation.
非洲铜业公司正在研究开发地下矿的方案，以期能开采较深的含硫矿物。
Other important African export commodities are iron ore and timber, followed by manganese, cobalt, copper and chromium.
其他重要的非洲出口商品是铁矿石和木材，其次还有锰、钴、铜和铬。
Other important African export commodities are iron ore and timber, followed by manganese, cobalt, copper and chromium.
其他重要的非洲出口商品是铁矿石和木材，其次还有锰、钴、铜和铬。
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