I spent much of my morning in the tiny hamlet of Time, Pennsylvania, waiting to catch a loaded coal train departing Consol Energy’s Bailey Mine, which is just over the hill in this photo. Bailey can load a 120-car coal train, 12,000 tons of coal, in a little less than four hours. The trains depart like clockwork, every four hours. As soon as one departs, an empty coal train, waiting in a siding 30 minutes down the line, will move up and into the loading queue at the mine. A pair of new GE Evolution series locomotives is at the rear of this train, helping shove the massive weight over the summit just south of the mine. The helper units will break off a few miles down the track and return to give the next train a push in four hours. The whole operation is like a well-oiled machine.