Blankenship on Twitter

Former mine executive Don Blankenship has jumped on Twitter, renewing his feud with U.S. Sen. Joe Manchin on the day Blankenship was to finish a one-year prison sentence arising from a deadly mine explosion. Even before the U.S. Bureau of Prisons listed Blankenship as leaving a halfway house in Arizona on Wednesday, the ex-Massey Energy CEO rattled off a series of tweets.