Not even bankruptcy is stemming the U.S. coal glut. Production at coal miners that declared bankruptcy in the past four years rose 3 percent on average, through the third quarter, an analysis of four companies by Bloomberg Intelligence shows. Mines formerly owned by James River Coal Co. posted a gain of 31 percent. Stockpiles held by utilities ended 2015 at a six-year high, data from the Energy Information Administration show. Some of the failed companies have restructured debt. Others have sold mines at bargain prices to former rivals. The glut — at least 100 million tons, according to Bloomberg Intelligence — threatens to depress prices for years, prolonging a global rout in an industry that has already eliminated more than 26,000 jobs, 29 percent of the workforce, since 2012. More companies and jobs may be at risk. “Some people think that if a company goes bankrupt, everything just stops,” […]