Plains All American Pipeline, L.P., through its subsidiaries, engages in the transportation, storage, terminalling, and marketing of crude oil, refined products, and liquid petroleum gas (LPG) products in the United States and Canada. The company operates in three segments: Transportation, Facilities, and Supply and Logistics. The Transportation segment transports crude oil and refined products on pipelines, gathering systems, trucks, and barges. As of December 31, 2011, this segment owned and leased 16,000 miles of active crude oil and refined products pipelines and gathering systems; 23 million barrels of above-ground tank capacity used primarily to facilitate pipeline throughput; 67 trucks and 382 trailers; and 82 transport and storage barges, and 44 transport tugs. The Facilities segment provides storage, terminalling, and throughput services for crude oil, refined products, and LPG and natural gas, as well as offers LPG fractionation and isomerization, and natural gas processing services. The Supply and Logistics segment purchases crude oil at the wellhead, and pipeline and terminal facilities; waterborne cargoes at their load port and various other locations in transit; and LPG from producers, refiners, and other marketers. This segment also resells or exchanges crude oil and LPG; and transports oil and LPG on trucks, barges, railcars, pipelines, and ocean-going vessels to various delivery points. It has 622 trucks and 731 trailers, and 2,453 railcars. The company also owns and operates natural gas storage facilities. Plains All American Pipeline, L.P. was founded in 1998 and is headquartered in Houston, Texas.