Smith Ranch-Highland

  • The combined operations at Smith Ranch (including the North Butte satellite mine) and Highland form the largest uranium production facility in the United States.
  • Cameco operates both ISO 14001 certified Wyoming locations, which opened in 1975 and 1972 respectively, and uses the environment-friendly in situ recovery mining method.
  • The Smith Ranch central plant currently processes all of the uranium while the Highland mill is idle. 
Operation(As of December 31, 2016)
100% Cameco ownership
22.7 m lbs U3O8 long term production since 2002

2016 Update


At Smith Ranch-Highland, production for the year was 36% lower than in 2015 due to the decision to curtail production in 2016.

Smith Ranch-Highland Production

Cameco's Share (millions lbs)

3 months ended
December 31
Year ended
December 31
2016 2015 2016 2015 2016 Plan 2017 Plan
0.1 0.3 0.9 1.4 0.9 0.41


1. We are no longer developing new wellfields at Crow Butte and Smith Ranch-Highland.


The curtailment of Cameco Resources’ US ISR operations resulted in a reduction of 85 positions, including employees and long-term contractors, with a workforce of 160 remaining to operate the sites. The severance cost was $3.6 million, which is included in our cost of sales.

Please see our 2016 Q4 MD&A for additional information.

See full Quarterly Report

Environment & Safety

Worker safety, environmental monitoring and proper decommissioning after project completion are of the utmost importance to Cameco.

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Reserves & Resources

Our mineral reserves and resources are the foundation of our company and fundamental to our success.

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Caution about Forward-Looking Information

Please click here for additional information about the assumptions applied in making the forward-looking statements on this page and the factors that could cause results to differ materially.