Terra Nitrogen Company, L.P. (TNCLP) (NYSE: TNH) announced today that the 2011 unitholder tax packages are available online. Investors can obtain their tax packages, which include Schedule K-1, on the internet at www.taxpackagesupport.com/terra. TNCLP expects to begin mailing the 2011 tax packages by Monday, April 9, 2012. For additional information, unitholders may call Tax Package Support toll free at (877) 692-6562 weekdays between 8 a.m. and 5 p.m. CDT. About TNCLP Terra Nitrogen Company, L.P. is a leading manufacturer of nitrogen fertilizer products. TNCLP is the sole limited partner of Terra Nitrogen, Limited Partnership (TNLP), owner of the Verdigris, Oklahoma manufacturing facility and related assets. Terra Nitrogen GP Inc., an indirect, wholly-owned subsidiary of CF Industries Holdings, Inc., is the General Partner of TNCLP and exercises full control over all of TNCLP’s business affairs.