Crow Butte

  • In the second quarter of 2016, Cameco made the decision to curtail production and defer all wellfield development at our US operations.
  • Crow Butte was the first uranium mine in Nebraska - discovered in 1980 and began production in 1991. 
  • Crow Butte has used the in situ recovery mining method to extract about 11.8 million pounds of uranium.
Operation(As of December 31, 2017)
100% Cameco ownership
11.8 m lbs U3O8 long term production since 2000

2017 Update

Production Curtailment

At Crow Butte, 2017 production was 67% lower than in 2016 due to the decision to curtail production in 2016.

Crow Butte Production

Cameco's Share (million lbs)

3 months ended
December 31
Year ended
December 31
2017 2016 2017 2016 2017 Plan 2018 Plan
- - 0.1 0.3 0.1 - 1
  1. 1We are no longer developing new wellfields at Crow Butte and Smith Ranch-Highland.

Future Production

As a result of our decision to defer all wellfield development at the US operations, production will cease in 2018, which is expected to result in production of less than 100,000 pounds.


During the fourth quarter, we recorded a $184 million write down of our US assets. Due to the continued weakening of the uranium market and the reduction in mineral reserves, we concluded that it was appropriate to recognize an impairment charge for these assets.

See full Quarterly Report

Environment & Safety

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

See more

Reserves & Resources

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

See more

Caution about forward-looking information

This page may contain forward-looking information that is based upon the assumptions and subject to the material risks discussed on page 2 of Cameco's most recent Quarterly MD&A.