Nustar Energy, 2288 County Road C W, Saint Paul, MN 55113, US

CHS gathers, produces, refines and processes essential resources that feed millions of people throughout the world. CHS is a diversified energy, grain and foods company that provides products ranging from grain marketing to food processing. A Fortune 500 company, farmers, ranchers and cooperatives from the Great Lakes area to the Pacific Coast and from Canada to Texas own the company. It also operates petroleum refineries and pipelines and, through a range of working partnerships, markets and distributes Cenex brand energy products. CHS was formerly known as Cenex Harvest States, which was established in 1998 when Cenex and Harvest States merged. The name was changed in 2000. CHS maintains a location in Inner Grove Heights, Minn.