REFINERY MARGIN TRACKER: US margins take a hit as EPA mandate uncertainty roils RINs prices2021-08-242021-08-24/wp-content/uploads/liberty-petroleum-icon-logo2.pngLiberty Petroleum Corp/wp-content/uploads/liberty-petroleum-icon-logo2.png200px200px
US refinery margins slid for the week to Aug. 20 due to the dramatic fall…