NiSource unit Columbia Gas Transmission and MarkWest Energy Partners Announce Additional Plans to Expand Natural Gas Midstream Services in West Virginia

NiSource Inc. unit Columbia Gas Transmission Corp. and MarkWest Energy Partners, LP announced their intention to jointly expand natural gas gathering and processing services to support increased production volumes in the Appalachian Basin of central West Virginia. Columbia Gas and MarkWest are in discussions with several natural gas producers regarding...