Associated Press: A push by environmentalists to reduce coal’s role in the nation’s energy future will drive up costs and hurt efforts to wean the country from oil, say the chairmen of two major coal concerns in West Virginia. During separate gatherings in West Virginia on Thursday, the chairmen of Richmond, Va.-based Massey Energy (nyse: MEE – news – people ) and CSX Corp. (nyse: CSX – news – people ) discussed coal’s future. “There’s a move afoot among the environmentalists to block the usage …