1964
The business is founded as Terra Chemicals International, Inc., with the opening of a nitrogen fertilizer manufacturing facility at the Port Neal complex in Sergeant Bluff, Iowa.

1965
Terra purchases Grand Forks Seed Co. in Grand Forks, North Dakota. This business sells fertilizers, crop protection products, seed and micronutrients to retailers and operators of grain elevators for resale to growers.

1967
Terra begins producing and selling nitrogen-based fertilizer.

1974
The company makes its first public stock offering.

1976
Terra doubles its capacity for manufacturing nitrogen fertilizers and feed ingredients by forming a partnership to operate a new nitrogen plant in Woodward, Oklahoma.

1977
Terra acquires the major assets of Memphis-based Riverside Chemical Co., making Terra one of the nation's largest independent producers and distributors of fertilizer, seed and agricultural chemicals.

1981
Terra becomes part of Inspiration Resources Corp., owned by Minorco, an international natural resources company.

1985
Terra acquires the agricultural products division of Sohio Chemical Company, adding retail farm service centers in Michigan, Ohio, Indiana, Illinois, Missouri and Kansas.

Terra announces its new corporate name, Terra International, Inc.

1988
Terra buys its partner's interest in the Woodward, Oklahoma, anhydrous ammonia manufacturing complex.

1991
Inspiration Resources Corp. moves its headquarters from New York to Sioux City, Iowa, underlining its focus on agribusiness through Terra.

1992
Inspiration Resources Corp. changes its name to Terra Industries Inc., as a reflection of its commitment to agriculture.

1993
Terra steps beyond its U.S. boundaries with the purchase of a nitrogen fertilizer manufacturing complex in Courtright, Ontario.

1994
With the acquisition of Agricultural Minerals and Chemicals Inc. (AMCI), Terra becomes a first-tier producer of nitrogen and methanol in North America. Manufacturing plants in Verdigris, Oklahoma, and Blytheville, Arkansas, double Terra's nitrogen production capacity. The methanol plant in Beaumont, Texas, is one of the largest in North America.

An expansion to Terra's Woodward, Oklahoma, ammonia plant is completed, allowing for the production of methanol, in addition to anhydrous ammonia.

1997
An expansion project at the Port Neal plant is completed, increasing its nitrogen solutions capacity to 810,000 tons from 490,000.

Terra announces the construction of an ammonia loop at its Beaumont, Texas methanol plant. This addition, to be completed in 1999, will produce up to 255,000 tons of ammonia annually.

Terra expands beyond North America with the purchase of two nitrogen fertilizer plants in the United Kingdom: Billingham and Severnside.

1998
Minorco announces plans to divest its 57% stake in Terra as part of a merger agreement with Anglo American Corp.

1999
Terra sells its Distribution business, which includes approximately 400 retail farm service centers in the U.S. and Canada, to Cenex/Land O'Lakes Agronomy Company.

2001
Michael Bennett is named Terra President and CEO.

2003
Terra reduces its Board of Directors from 11 to seven members.

Terra forms an Environmental Technologies division to develop sales and services to customers using nitrogen products to reduce nitrogen oxides (NOx) and other emissions from various sources, including power plants; and in other environmental processes, such as water treatment.

Terra sells its sales contracts and rights to the full output of its Beaumont, Texas, methanol plant for the next five years to Methanex.

2004
Terra permanently closes its Blytheville, Arkansas manufacturing facility.

Terra mothballs its Beaumont, Texas methanol manufacturing facility.

Terra acquires Mississippi Chemical Corporation, including the Yazoo City, Mississippi and Donaldsonville, Louisiana manufacturing sites, plus 50% interest in an ammonia manufacturing facility in the Republic of Trinidad and Tobago.

Anglo American sells more than 25 million Terra common shares in a private placement.

2005
Terra sells it Blytheville terminal assets to Kinder Morgan and enters into a leasing agreement for the Blytheville ammonia and UAN storage.

2007
Terra contributes its UK assets to a joint venture with Kemira GrowHow Oyj, with each partner assuming 50% ownership. The joint venture, GrowHow UK Ltd., announces the closure of the Severnside facility.

2008
Terra sells its Beaumont, Texas assets to Eastman Chemical Company.

2009
Terra breaks ground on a project to add 500,000 tons per year of UAN upgrading capacity at its Woodward, Oklahoma manufacturing facility.