Reuters: A US program meant to encourage coal mining on federal land is open to industry abuse and costs taxpayers billions of dollars in lost revenue every year, a White House study to be released on Wednesday concluded. Roughly 40 percent of US coal comes from federal land and taxpayers are being short changed on those sales due to lax oversight and permissive royalty rules, according to the report from the White House Council of Economic Advisors. "The program has been structured in a way that misaligns...