NuStar Energy, L.P. is a master limited partnership that engages in the transportation and storage of crude oil as well as refined products in the U.S., the Netherlands Antilles, Canada, Mexico, and the U.K. NuStar is the second-largest independent liquids terminal operator in the nation. NuStar's key assets are centered in the United States, Canada, Mexico, the Netherlands, St. Eustatius in the Caribbean and the United Kingdom. NuStar reports its operation under three business segments: Storage, Pipeline and Fuels Marketing.