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Postponed – Millennium Mine Project

The Impact Assessment Act (IAA) came into force August 28, 2019. Ongoing projects with environmental assessments initiated under the Canadian Environmental Assessment Act, 2012 (CEAA 2012) and led by the CNSC, will continue under their current processes. The IAA contains provisions to enable these projects to advance in this way.


Environmental assessment (EA) start date:  August 21, 2009
CEAR reference number:  09-03-49928
Proponent: Cameco Corporation
Location: Moon Lake

Latest update

Project description

On May 15, 2014 Cameco informed the Canadian Nuclear safety Commission (CNSC) that it does not wish to proceed with the licensing of the Millennium Mine Project at this time due to current economic conditions.

As a result, the public hearing for consideration of the EA report and licensing of the Millennium Mine Project scheduled for June 18, 2014 was adjourned, and the EA report has been put on hold. If, at a later date, Cameco requests the Commission to consider the application for a licence for the project, the EA report will be re-opened and completed at that time.

In 2009, the CNSC received a project description from Cameco Corporation for the issuance of a licence to construct and operate a new uranium mine.

Cameco Corporation was proposing to develop an underground uranium mine located in the southeastern part of the Athabasca Basin in northern Saskatchewan, approximately 600 km north of Saskatoon. The proposed Millennium Mine would produce 150,000 to 200,000 tonnes of ore annually for six to seven years. Ore and associated waste materials would be transported to a licensed mill along a new 21 km access road that would connect to the existing road network.

CNSC authorization in the form of a licence issued under subsection 24(2) of the Nuclear Safety and Control Act (NSCA) is required in order for the project to proceed.

Before the Commission can consider an NSCA licensing decision regarding Cameco Corporation's proposal, an EA must be completed in compliance with the Canadian Environmental Assessment Act. The purpose of an EA is to identify the possible environmental effects of a proposed project, and determine whether these effects can be mitigated before the project is allowed to proceed.

Further information

CNSC maintains a public registry of documents related to its EAs. Lists and copies of documents may be obtained upon request. For questions or information directly related to this EA, please contact:

Nicole Frigault
Environmental Assessment Specialist

Environmental Assessment Division
Canadian Nuclear Safety Commission
P. O. Box 1046, Station B
Ottawa, ON
K1P 5S9
Telephone: 1-800-668-5284
Fax: 613-995-5086

The CNSC regulates the use of nuclear energy and materials to protect the health, safety and security of Canadians and the environment; to implement Canada’s international commitments on the peaceful use of nuclear energy; and to disseminate objective scientific, technical and regulatory information to the public.

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