HollyFrontier readies renewable diesel project as Q3 refining margins jump By admin Posted November 3, 2021 In In the News HollyFrontier readies renewable diesel project as Q3 refining margins jump2021-11-032021-11-03/wp-content/uploads/liberty-petroleum-icon-logo2.pngLiberty Petroleum Corp/wp-content/uploads/liberty-petroleum-icon-logo2.png200px200px HollyFrontier on Nov. 3 reported strong third-quarter results from its refining segment due to high…