Inergy, L.P. engages in the retail marketing, sale, and distribution of propane to residential, commercial, industrial, and agricultural customers in the United States. The company owns and operates five natural gas storage facilities comprising Stagecoach, Thomas Corners, Steuben, Seneca Lake, and Tres Palacios; a natural gas liquids business; midstream storage and transportation business; and solution-mining and salt production company. As of October 31, 2011, it served retail customers in 33 states from approximately 338 customer service centers, which have an aggregate of approximately 34.6 million gallons of above-ground propane storage. The company is headquartered in Kansas City, Missouri.