MarkWest Energy Buys an Ohio Short Line Railroad – Why? October 3, 2013 Beaver County, Columbiana County, Energy Services, Mahoning County, MarkWest Energy, Ohio, Pennsylvania Username Password Remember me Forgot Password? Join Us Related Post navigation Could Philly Burbs See Shale Drilling?! PA DCNR Launches StudyWhat’s Missing in Latest Duke “Radioactive” Study? Real Science You do not have permission to view the comments. Click here to cancel reply.Please Login to post a comment Notify me of follow-up comments by email.