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We operate Smith Ranch and Highland in Wyoming as a combined operation. Each has its own processing facility, but the Smith Ranch central plant currently processes all the uranium and the Highland mill is currently idle. Together, they form the largest uranium production facility in the United States.

Key facts

  • operated by Cameco Resources, a 100% wholly owned subsidiary of Cameco
  • Smith Ranch has proven and probable reserves of 5.2 million pounds U3O8 at an average grade of 0.09%
  • North Butte-Brown Ranch has proven and probable reserves of 3.8 million pounds U3O8 at an average grade of 0.08%
  • uses environment-friendly in situ recovery (ISR) mining technique to extract uranium
  • licensed annual wellfield capacity (including North Butte) 3 million pounds U3O8
  • Smith Ranch-Highland processing plants have combined licensed annual production capacities of 5 million pounds U3O8
  • ISO certification ISO 14001 certified
  • in 2013 production was 1.7 million pounds U3O8
  • total production under Cameco ownership 2002 to 2013 17.6 million pounds



Smith Ranch-Highland

Operator Francis Horne conducts a...

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