Yesterday, the Romney campaign announced that shale oil billionaire Harold Hamm will lead the candidate’s energy policy, joining a team that already includes coal lobbyist Jim Talent and tar-sands lobbyist David Wilkins. Hamm is the founder and chairman of Continental Resources, which has dominated oil and gas boom in North Dakota. The Wall Street Journal reports that Hamm generated “almost all” of his $12 billion wealth in Continental in the past three years. The billionaire, ranking at No. 36 on Forbes list of richest Americans, stood at Romney’s side while the candidate gave a pro-drilling speech in North Dakota Thursday afternoon.