Thirty foreign and local companies have tendered for shares in Zambia's major coal supplier to its copper mines, a senior industry official said on Wednesday. Joseph Chikolwa, chief executive officer of ZCCM Investments Holdings, which wholly owns the Maamba Collieries Ltd mine, said tenders would close on March 28. "We do not have a fixed percentage to give to the successful bidder but we have decided to leave it open for negotiation with the successful bidder depending on the value they...(read more)