 About 70% of the gasoline fuel used in the state comes from Pine Bend and the nearby St. Paul Park Refinery, while most of the rest comes from a combination of the Mandan Refinery in North Dakota, and the Superior Refinery in Superior, Wisconsin.40 to 50% of Pine Bend's output is used within the state.Flint Hills is currently planning a $100 million expansion to increase capacity at the plant to about .