| 2007 | Cameco forms three new strategic alliances with junior uranium companies to maximize opportunities to participate in development of new deposits. (Ex: Cue Capital and Western Uranium Corporation) | |
| Cameco signs a non-binding memorandum of understanding with Kazatomprom to co-operate on the development of uranium conversion capacity and to pursue additional uranium production. | ||
| 2006 | Cameco acquires a 100% interest in Zircatec Precision Industries, Inc. Zircatec's primary business is manufacturing nuclear fuel bundles and other components for Candu reactors. | |
| Cameco's Crow Butte Resources and Smith Ranch-Highland operations both receive ISO 14001:2004 certification. | ||
| Cameco announces a two-for-one share split. | ||
| 2005 | Cameco negotiates a toll-processing agreement with British Nuclear Fuels plc (BNFL) to secure 5 million kgU of additional conversion services from BNFL's Springfields plant in the United Kingdom. | |
| 2004 | Cameco creates Centerra Gold and consolidates gold assets. | |
| Cameco announces development of uranium mine at Inkai, Kazakhstan. | ||
| Cameco decides to proceed with construction of a new mine at Cigar Lake in northern Saskatchewan. | ||
| Cameco announces a three-for-one share split and increases its annual cash dividend. | ||
| 2003 | Cameco receives ISO 14001 Certification for McArthur River and Cigar Lake. | |
| Gerald Grandey is appointed chief executive officer of Cameco. | ||
| Cameco appoints Victor Zaleschuk as the new board chair. | ||
| 2002 | All of Cameco's common shares are publicly traded after the government of Saskatchewan sells its remaining 10% ownership in February. | |
| Cameco increases its stake in Bruce Power to 31.6%. | ||
| 2001 | Cameco expands its interest in the nuclear industry by acquiring 15% of Bruce Power, the limited partnership formed to lease the Bruce reactors in Ontario. | |
| Cameco announces that reserves at McArthur River increased by more than 50%. | ||
| The McArthur River/Key Lake uranium operations achieve full production of 18 million pounds. | ||
| 2000 | The McArthur River mine achieves commercial production in November 2000 and becomes the world's largest high-grade uranium mine. | |
| 1999 | Cameco signs an agreement for the purchase of natural uranium derived from highly enriched uranium (HEU) contained in dismantled Russian nuclear weapons. | |
| Cameco sells a 14% interest in McArthur River and 17% in Key Lake to Cogema Resources Inc. Cameco begins mining at McArthur River, the world's largest high-grade uranium mine. | ||
| 1998 | Cameco acquires Canadian-based Uranerz Exploration and Mining Limited and Uranerz U.S.A., Inc., increasing its reserves and resources and production levels by about 30%. | |
| 1997 | Kumtor gold operation in Kyrgyzstan, Central Asia, owned one-third by Cameco, achieves commercial production. | |
| 1996 | Cameco shares begin trading on the New York Stock Exchange. | |
| Cameco Gold is formed as a subsidiary of Cameco to conduct the company's gold business. | ||
| Cameco purchases Power Resources, Inc., the largest uranium producer in the United States, increasing its reserves and resources by 10%. | ||
| 1991 | Cameco completes its initial public offering and shares begin trading on the Toronto and Montreal stock exchanges. | |
| 1990 | Cameco sells a one-third interest in the Rabbit Lake operation to Uranerz Exploration and Mining Limited in order to reduce debt. | |
| 1988 | Cameco is created by the merger of two Crown corporations—Saskatchewan Mining Development Corporation and Eldorado Nuclear Limited. |