Cameco Corporation announced today that it has agreed to a request from the Kyrgyz government for an extension from April 30, 2008 to June 1, 2008 for the closing date of previously announced agreements with Cameco and Centerra Gold Inc. The Kyrgyz government has indicated their review process has taken longer than anticipated. (For more information about these agreements, see Cameco’s news releases on August 30, 2007 and February 13, 2008).

Cameco has communicated to the Kyrgyz government it expects the transactions to be completed on the terms of the existing framework agreements. Kyrgyz parliamentary approval is one of a number of conditions to closing the agreements. There can be no assurance that parliamentary approval will be received or other conditions will be satisfied.

Cameco, with its head office in Saskatoon, Saskatchewan, is the world's largest uranium producer. The company's uranium products are used to generate electricity in nuclear energy plants around the world, providing one of the cleanest sources of energy available today. Cameco's shares trade on the Toronto and New York stock exchanges.

The following news release is available on Cameco's web site at

http://www.cameco.com/email_news08/news_release.php?id=220

Cameco Corporation reported today that its annual report on Form 40-F has been filed with the US Securities and Exchange Commission (SEC). The document includes Cameco's audited annual financial statements for the year ended December 31, 2007, a reconciliation of those financial statements to US GAAP, its management's discussion and analysis, and its Canadian annual information form (AIF). Cameco also filed an updated technical report for the Kumtor gold mine with SEC.

As well, Cameco has filed with Canadian securities regulatory authorities its AIF, the reconciliation of its audited annual financial statements to US GAAP, and the updated technical report for the Kumtor gold mine.

Cameco Investor Relations
2121-11th Street West
Saskatoon, SK  S7M 1J3
Phone: (306) 956-6894

On April 9, 2008, Cameco plans to post on its website the management proxy circular that is being distributed to shareholders of record as of April 3, 2008 for its annual and special meeting of shareholders on May 15, 2008.

Cameco, with its head office in Saskatoon, Saskatchewan, is the world's largest uranium producer. The company's uranium products are used to generate electricity in nuclear energy plants around the world, providing one of the cleanest sources of energy available today. Cameco's shares trade on the Toronto and New York stock exchanges.

Cameco Corporation reported today that the company's 2007 audited financial statements with accompanying notes (financial statements) and related management's discussion and analysis (MD&A) are available on this website following filing with securities regulatory authorities.

Later in March 2008, Cameco's Form 40-F report, which includes the financial statements, a reconciliation of the financial statements to US GAAP, MD&A, and annual information form (AIF), will be filed with the US Securities and Exchange Commission. Also, at that time, the AIF and reconciliation of the financial statements to US GAAP, will be filed with Canadian securities regulatory authorities. A news release will be issued to announce when these documents have been filed.

On April 9, 2008, Cameco plans to post on this website the management proxy circular that is being distributed to shareholders of record as of April 3, 2008 for its annual and special meeting of shareholders on May 15, 2008.

Cameco, with its head office in Saskatoon, Saskatchewan, is the world's largest uranium producer. The company's uranium products are used to generate electricity in nuclear energy plants around the world, providing one of the cleanest sources of energy available today. Cameco's shares trade on the Toronto and New York stock exchanges.

Cameco Corporation announced today that a presentation by president and CEO Jerry Grandey at the BMO Capital Markets 2008 Global Metals and Mining Conference will be available by audiocast. The event is scheduled for Monday, February 25, 2008 at 2:00 p.m. Eastern Time.

The audiocast will be available on this website using Windows Media Player or Real Player software. See the link on the home page on the day of the event. A copy of the presentation and audio file will be available on our website shortly after the conference.

Cameco, with its head office in Saskatoon, Saskatchewan, is the world's largest uranium producer. The company's uranium products are used to generate electricity in nuclear energy plants around the world, providing one of the cleanest sources of energy available today. Cameco's shares trade on the Toronto and New York stock exchanges.

Investor inquiries:
Rachelle Girard (306) 956-6403

Media inquiries:
Gord Struthers (306) 956-6593

Cameco Corporation announced today that significant progress has been made in remediation efforts at the Cigar Lake uranium project.

Remediation work has been underway since October 2006 when a rockfall resulted in a flood of the underground development. Construction was about 60% complete at that time.

We have completed pouring a concrete barrier in the area of the inflow and reinforcing a tunnel adjacent to the rockfall. This includes injection of cement into the rock around the area of the inflow to seal off the area. In addition, we have just completed a test on the effectiveness of the underground seal. The results are positive and demonstrate that the seal is effective with no indication of plug deterioration throughout the six-day testing period. Additional testing will be conducted as we prepare to dewater the mine.

On February 12, 2008, we began testing the effectiveness of the seal by pumping water from the shaft down to approximately 100 metres below surface. When the water was down to that level, the pumps were turned off and we measured the rate at which the water rose in the shaft. The water was allowed to rise to a set elevation before pumping it down again to the 100-metre level. This procedure was repeated a number of times during the test period which ended on February 18, 2008.

There are a number of activities that must now take place before we can begin dewatering the underground development. We need to complete an assessment to determine if depressurization, reinforcement or other precautionary measures are necessary in two other areas of the mine. We anticipate results from this assessment in the first quarter of 2008 and can then determine if additional remediation is required in these areas.

In addition to the technical work, we need to complete many of the corrective actions arising from the root cause investigation before applying for regulatory approval to dewater the mine.

We are preparing a regulatory application to allow dewatering of the underground development and all other remediation activities leading up to, but not including the restart of mine construction. We plan to submit this application to the Canadian Nuclear Safety Commission in the first half of the year. Therefore, if the application is approved we anticipate dewatering in the second half of 2008, as previously announced.

Cameco is also conducting an assessment of the partially completed second shaft to gather more detailed images of the structures and geology to facilitate mine remediation and future mine planning. We are targeting substantial completion of this assessment in the first half of 2008.

Installation of the ventilation fans on surface, slurry load-out facilities and surface pipelines is currently underway at the site.

We continue to anticipate production startup by 2011 at the earliest. We will be able to provide a firmer production date after the mine has been dewatered, the condition of the underground development has been assessed, and the findings incorporated in the new mine development and production plans.

Statements contained in this news release which are not current statements or historical facts are "forward-looking information" (as defined under Canadian securities laws) and "forward-looking statements" (as defined in the U.S. Securities Exchange Act of 1934, as amended) which may be material and that involve risks, uncertainties and other factors that could cause actual results to differ materially from those expressed or implied by them. The above Cigar Lake expected production date and certain other statements regarding our plans and expectations for the resumption of production are forward-looking information and are based upon the following key assumptions and subject to the following factors that could cause results to differ materially:

• we have assumed the success and timely completion of our dewatering and remediation efforts (including favourable results of geotechnical assessments), which are subject to the risk that they do not succeed as anticipated or take longer to complete than anticipated;
• our ability to obtain and comply with the terms of, and the timing of, various regulatory approvals, which are subject to the risk of taking longer to obtain than anticipated, or our inability to comply with their terms; and
• our expectation regarding the condition of the existing underground workings is correct, which is subject to the risk that actual conditions prove to be worse.

We have also assumed that there are no further disruptions to our dewatering and other remediation plans, but we are subject to the risk of delays arising from natural phenomena, such as fires, floods or cave-ins; the occurrence of another water inflow at Cigar Lake; failure of our radiation protection plans, labour disputes, litigation or arbitration proceedings; delays in obtaining or failure to procure the required equipment, operating parts and supplies; equipment failure; unexpected geological or hydrological conditions, and adverse ground conditions.

If actual results differ materially from the assumptions set out above or if any of the material risk factors above occur, the target date for the completion of dewatering Cigar Lake, and its production restart date, may differ materially from the expected dates that are stated above.

There may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. These factors are not intended to represent a complete list of the material risk factors. Additional risk factors are noted in Cameco's current annual information form and in Cameco's current annual MD&A.

The forward-looking information and statements included in this news release represent Cameco's views as of the date of this news release and should not be relied upon as representing Cameco's views as of any subsequent date. While Cameco anticipates that subsequent events and developments may cause its views to change, Cameco specifically disclaims any intention or obligation to update forward-looking information and statements, whether as a result of new information, future events or otherwise, except to the extent required by applicable securities laws. Forward-looking information and statements contained in this news release regarding Cigar Lake remediation and our plans and expectations for resumption of Cigar Lake production is presented for the purpose of assisting Cameco's shareholders in understanding management's current views regarding those future outcomes, and may not be appropriate for other purposes.

There can be no assurance that forward-looking information and statements will prove to be accurate, as actual results and future events could vary, or differ materially, from those anticipated in them. Accordingly, readers of this news release should not place undue reliance on forward-looking information and statements.

The above scientific and technical information for Cigar Lake was prepared under the supervision of C. Scott Bishop, a professional engineer employed by Cameco as the chief mine engineer of the Cigar Lake project and a qualified person for the purpose of National Instrument 43-101.

Cameco, with its head office in Saskatoon, Saskatchewan, is the world's largest uranium producer. The company's uranium products are used to generate electricity in nuclear energy plants around the world, providing one of the cleanest sources of energy available today. Cameco's shares trade on the Toronto and New York stock exchanges.

Cameco Corporation announced today that a presentation by senior vice-president and CFO Kim Goheen at the CIBC World Markets 2008 Whistler Institutional Investor Conference will be available by audiocast. The event is scheduled for Thursday, February 21, 2008 at 5:05 p.m. Eastern Time.

The audiocast will be available on Cameco's website at cameco.com using Windows Media Player or Real Player software. See the link on the home page on the day of the event. A copy of the presentation and audio file will be available on our website shortly after the conference.

Cameco, with its head office in Saskatoon, Saskatchewan, is the world's largest uranium producer. The company's uranium products are used to generate electricity in nuclear energy plants around the world, providing one of the cleanest sources of energy available today. Cameco's shares trade on the Toronto and New York stock exchanges.

Cameco Corporation today reported that the Kyrgyz government has requested an extension to April 30, 2008 of the closing date of previously announced agreements with Cameco and Centerra Gold Inc. (For details of these agreements please see Cameco's August 30, 2007 news release.)

Centerra received a letter on February 13, 2008 from the Kyrgyz prime minister requesting an extension of the February 15, 2008 deadline for completion of the transactions contemplated by the preliminary framework agreements on the Kumtor project.

Cameco is prepared to continue its constructive relationship with the Government of the Kyrgyz Republic including assisting it to obtain the necessary parliamentary approval for the Kumtor transactions.

Kyrgyz parliamentary approval is one of a number of conditions to closing the agreements. (For a recent update of the political situation in the Kyrgyz Republic please see Cameco's February 6, 2008 quarterly news release.) There can be no assurance that parliamentary approval will be received or other conditions will be satisfied.

Cameco, with its head office in Saskatoon, Saskatchewan, is the world's largest uranium producer. The company's uranium products are used to generate electricity in nuclear energy plants around the world, providing one of the cleanest sources of energy available today. Cameco's shares trade on the Toronto and New York stock exchanges.

Investor inquiries:
Bob Lillie (306) 956-6639

Media inquiries:
Gord Struthers (306) 956-6593

The following news release is available on Cameco's web site at

http://www.cameco.com/email_news08/news_release.php?id=213

Cameco Reports Record Annual Revenue, Earnings and Cash Flow for 2007 (February 6, 2008)

We would like to share with you some changes we will be implementing with our upcoming fourth quarter news release. Our quarterly financial release to be issued next Wednesday, February 6, 2008, before markets open, will be shorter than previous reports. After listening to feedback from market participants and researching the information released by other issuers, we decided to discontinue the inclusion of the fourth quarter management's discussion and analysis (MDA) with this news release. During the earnings season, we understand most analysts are inundated with news releases, conference calls, and other data. Also, our research showed that a majority of our peers issue a news release focused only on the highlights of the fourth quarter operating results and business prospects. In the next few weeks, we intend to file the fourth quarter MDA as part of the annual MDA package on Sedar and Edgar. You will be notified when that occurs.

Two other changes to the package have been made as well. To focus on the long-term nature of the uranium business, Cameco plans to provide only annual guidance in the future and is discontinuing guidance for the upcoming quarter. With uranium delivery schedules, which vary widely from quarter to quarter, we believe it's beneficial to view the company's business on an annual basis. Also, we will be reducing the number of years covered in our table of indicative future uranium prices.