The U.S. Department of Interior won't fight a court ruling threatening the future of a northwestern Colorado coal mine.

Interior Department spokeswoman Jessica Kershaw told the Craig Daily Press that it won't appeal a May ruling from a federal judge ordering a do-over of an environmental review of the Colowyo mine.

Judge R. Brooke Jackson said the review should take into account the eventual climate change impacts of the coal to be mined and said he would shut down the mine unless the review was completed in four months.

Kershaw says Interior is on track to fix the problems in the original review.

Gov. John Hickenlooper and members of Colorado's congressional delegation had urged an appeal both to secure the mine's future and prevent other mining projects from being challenged.