REFINERY MARGIN TRACKER: Colonial outage threatens USGC margins By admin Posted May 10, 2021 In In the News REFINERY MARGIN TRACKER: Colonial outage threatens USGC margins2021-05-102021-05-10/wp-content/uploads/liberty-petroleum-icon-logo2.pngLiberty Petroleum Corp/wp-content/uploads/liberty-petroleum-icon-logo2.png200px200px US Gulf Coast refining margins have risen as the lifting of coronavirus restrictions have boosted…