Name a global economic woe, and chances are Charles Needham is dealing with it. Market turmoil has knocked 80% off the shares of South Africa's Metorex, the mining company he runs. The plunge in global commodities is slamming prices for the copper, cobalt, and other minerals Metorex unearths across Africa. The credit crisis makes it harder to raise money. And fighting has again broken out in the Democratic Republic of Congo, where Metorex has a mine and several projects in development.