| 2013 |
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| 2012 |
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| 2011 |
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| 2010 |
- Cameco signs two key uranium supply agreements with China Guangdong Nuclear Power and China Nuclear Energy Industry Corporation for a total commitment of 52 million pounds of uranium concentrate.
- Started the main processing plant at the Inkai minesite in Kazakhstan.
- McArthur River mine was awarded the John T. Ryan National Safety Trophy for the best safety performance in the metal mine category in 2009. The Cigar Lake project was also recognized with a Special Award Certificate for outstanding safety performance in 2009.
- Cameco has assisted in dismantling thousands of nuclear warheads through the "megatons to megawatts" program.
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| 2009 |
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| 2008 |
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| 2007 |
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| 2006 |
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| 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.
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| 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.
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| 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.
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| 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%.
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| 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.
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| 2000 |
- The McArthur River mine achieves commercial production in November 2000 and becomes the world's largest high-grade uranium mine.
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| 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.
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| 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%.
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| 1997 |
- Kumtor gold operation in Kyrgyzstan, Central Asia, owned one-third by Cameco, achieves commercial production.
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| 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%.
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| 1991 |
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| 1990 |
- Cameco sells a one-third interest in the Rabbit Lake operation to Uranerz Exploration and Mining Limited in order to reduce debt.
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| 1988 |
- Cameco is created by the merger of two Crown corporations—Saskatchewan Mining Development Corporation and Eldorado Nuclear Limited.
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