Charleston Gazette: A proposed coal-to-liquids plant being touted by Gov. Joe Manchin for Mingo County could receive at least $600 million in tax breaks under West Virginia’s existing economic development incentives programs. Complete details of incentives for the TransGas Development Systems LLC project have not been made public by Commerce Secretary Kelley Goes or by the Mingo County Redevelopment Authority, which is also backing the proposal. But under existing law, the $3 billion plant would …