Terra investors fall into two categories, those who invest in Terra Industries Inc., and those who invest in Terra Nitrogen Company, L.P. Brief descriptions of each entity follow—please use the links to find investor information about the company that interests you:

• Terra Industries Inc.  (Terra) is a leading North American producer and marketer of nitrogen products. The company employs approximately 950 people in North America and is headquartered in Sioux City, Iowa. Terra's New York Stock Exchange ticker symbol is TRA. (See fact sheet.)
• Terra Nitrogen Company, L.P. (TNCLP) is a Master Limited Partnership (MLP) consisting of one nitrogen manufacturing facility in Verdigris, Oklahoma, and terminal operations in Blair, Nebraska and Pekin, Illinois. Terra Nitrogen Company, L.P.'s New York Stock Exchange ticker symbol is TNH. (See fact sheet.)

Terra directly or indirectly holds approximately 75% of the outstanding common units of TNCLP, which are traded on the New York Stock Exchange, and the remaining 25% of TNCLP’s units are held by the public. In addition to operating the TNCLP manufacturing facility in Verdigris, Terra also owns and operates five other North American manufacturing facilities, and has a 50% interest in an ammonia facility in Trinidad and 50% interest in GrowHow UK Ltd., a United Kingdom joint venture. Terra also has a deep-water terminal in Donaldsonville, Louisiana, and 50% interest in Houston Ammonia Terminal near Pasadena, Texas.