Philadelphia Energy Solutions (PES) filed for its second Chapter 11 bankruptcy in less than two years on Sunday, a court filing showed, a month after a fire and explosion led to the permanent shutdown of the biggest oil refinery on the U.S. East Coast. PES said in June it will seek to permanently shut its oil refinery in Philadelphia after the massive fire caused substantial damage to the complex. The business has struggled ever since the explosion, with the refinery no longer in a functional state and crude shipments charted for PES being diverted in the weeks after June 21. The refinery, struggling financially for years, slashed worker benefits and scaled back capital projects to save […]