As revenue from oil nosedives following incessant global price fluctuations, the Federal Government is now channelling efforts to the development of minerals in the mines and steel industry to shore up foreign exchange earnings. Officials of the Federal Ministry of Mines and Steel Development said on Wednesday that while there had been concerted efforts to develop various minerals in the sector, much emphasis had been placed recently on the development of bitumen, barite and gold. They told our correspondent in Abuja that the government through the mines and steel ministry was striving to diversify the Nigerian economy away from oil