Description Named after a powerful weasel (the mascot of the University of Michigan), Wolverine Pipe Line transports a range of refined petroleum products across the US Midwest. It operates more than 1,000 miles of six-inch to 18-inch diameter pipeline which stretches through Illinois, Indiana, Michigan, and Ohio. Wolverine Pipe Line's system also includes 12 pumping stations. The company supplies about 35% of Michigan's refined petroleum products. National pipeline and terminals player Sunoco Logistics Partners' Eastern Pipeline System controls nearly a third of Wolverine Pipe Line.