Terra Nitrogen Company, L.P. (TNCLP) is a limited partnership that produces and distributes nitrogen fertilizer products. Its principal products are anhydrous ammonia (or ammonia) and urea ammonium nitrate solutions (UAN), which the Company manufactures at its facility in Verdigris, Oklahoma. The Company conducts its operations through an operating partnership, Terra Nitrogen, Limited Partnership (TNLP or the Operating Partnership). Terra Nitrogen GP Inc. (TNGP or General Partner) is the general partner of both TNCLP and TNLP and owns a consolidated 0.05% interest in the Partnership. The General Partner is an indirect, wholly owned subsidiary of Terra Industries Inc. (Terra). Terra is a producer and marketer of nitrogen products, serving agricultural and industrial markets.