Magellan Midstream Partners, L.P. engages in the transportation, storage, and distribution of petroleum products in the United States. The company's petroleum pipeline system transports petroleum products, such as gasoline, diesel and aviation fuel, heating oil, crude oil, and liquefied petroleum gas for independent and integrated oil companies, wholesalers, retailers, railroads, airlines, and regional farm cooperatives. It owns and operates storage terminals that have storage capacity of approximately 36 million barrels; and provides distribution, storage, blending, inventory management, and additive injection services for refiners and other end-users of petroleum products. In addition, the company owns and operates inland terminals that have a combined storage capacity of approximately 5 million barrels; and provides inventory and supply management, distribution, and gasoline additives injection services for retail, industrial, and commercial sale markets. Further, its ammonia pipeline system transports ammonia, which is primarily used as a nitrogen fertilizer, from production facilities in Texas and Oklahoma to terminals in the Midwest. As of December 31, 2012, the company's petroleum pipeline system comprised approximately 9,600 miles of pipeline and 49 terminals; 6 petroleum storage terminals located along coastal waterways in New Haven, Connecticut, Wilmington, Delaware, Gibson and Marrero, Louisiana and Corpus Christi, and Galena Park, Texas; 1 crude oil storage terminal in Cushing, Oklahoma; and 27 inland terminals located primarily in the southeastern United States. Its ammonia pipeline system consisted of 1,100-mile ammonia pipeline and 6 terminals. Magellan GP, LLC serves as the general partner of Magellan Midstream Partners, L.P. The company was founded in 2000 and is headquartered in Tulsa, Oklahoma.