Scope and Boundary

Scope

This online report tells you about our sustainability and corporate responsibility practices and performance since we last reported in 2012. Cameco is committed to publishing a sustainable development report (in print or online) every two years as outlined in our company’s Corporate Social Responsibility policy.

You can download a full or partial copy of our sustainable development report, or our Executive Summary.

Unless we indicate otherwise, we’ve prepared this report as of July 21st, 2014, and have not updated it.

Boundary

This report focuses on performance at all Cameco-owned global uranium mining and milling operations and our refining, conversion and fuel manufacturing operations. It does not include performance related to our ownership in nuclear fuel enrichment development, and it does not include any assessment of the performance of associated companies or non-operated joint ventures.

We collect quantitative data for all in-scope operations, except where the indicator is for a specific operation or geographic region (like public support polling) or where data is not yet available for an operation or region. Most data is collected by calendar year.

Limits to Our Current Reporting

While we have attempted to create a report that touches all aspects of our company, certain parts of our operations are not reported on for every indicator. For each GRI indicator, we have tried to be as specific as possible about which aspects are included and which are not.

Caution About Forward-Looking Information

Statements contained in this report include statements and information about our expectations for the future. When we discuss our strategy, plans and future financial and operating performance, or other things that have not yet taken place, we are making statements considered to be forward-looking information or forward-looking statements under Canadian and US securities laws. These include our statements about the future of nuclear energy and the demand for uranium. They also include other statements using other words such as plan, expect, anticipate, goal, outlook, ensure, could and will. They represent our current views as of July 21st, 2014 and can change significantly.

Forward-looking information is designed to help you understand management’s current views of our near and longer-term prospects, and it may not be appropriate for other purposes. We will not necessarily update this information unless we are required to by securities laws. Actual results and events may be significantly different from what we currently expect, because of the risks associated with our business. This information is based upon a number of material assumptions, which may prove to be incorrect, and is subject to a number of material risks, which are discussed in our current annual management discussion and analysis, including under the heading Caution about Forward-Looking Information.

In particular, we have made assumptions about the future of nuclear energy and the demand for uranium. The material risks that would cause actual results to differ include our assumptions are incorrect and the risk there are changes in the regulation or public perception of the safety of nuclear power, which adversely affect the demand for uranium and future prospects for nuclear energy.

Contact

If you have questions about this report, please contact us at the following e-mail address: sustainabledevelopment@cameco.com