Our Businesses

Black Butte mine


  • Joint venture with Anadarko Petroleum Corporation
  • Operating and marketing responsibilities held by Ambre Energy
  • 30 year mine history
  • Current production is 3.4Mtpa

  • Long-term domestic contracts are in place
  • Working on expanding production for additional domestic and export markets
  • Rail loop serviced by Union Pacific
  • Higher quality coal than most Powder River Basin resources

Black Butte mine is in the Green River Basin in Sweetwater County, south-west Wyoming, USA.

Black Butte is a 50/50 joint venture between Ambre Energy and Anadarko Petroleum Corporation. As with Decker mine, Ambre Energy operates the mine and is responsible for marketing.

The mine – a combination of dragline and truck and shovel stripping – targets production of about 3.4 million metric tons of coal each year. It is serviced by Union Pacific Railroad via an existing onsite rail loop.

Along with supplying the existing domestic market, Ambre Energy is working towards exporting coal from Black Butte to the international market.