A truck drives through copper ore dust from the mining pit at the Bisha Mining Share Company, northwest of Eritrea's capital Asmara, February 18, 2016. Eritrea expects to have four mines in operation by 2018 producing gold, copper, zinc and potash as one of Africa's poorest nations looks to build an industry that can kick-start its economy, a top mining official told Reuters. To match Interview ERITREA-MINING/REUTERS/Thomas Mukoya