BLM Tres Rios Field Office opens 30-day public scoping period on update to the Sunday Mine Complex operations plans


The Bureau of Land Management

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Dolores, Colo.The Bureau of Land Management Tres Rios Field Office plans to open a 30-day public scoping period for Pinion Ridge Mining LLC’s proposal to update and consolidate operations on five underground uranium and vanadium mines into a single mining plan at the Sunday Mine Complex. The public scoping period begins August 15, 2022 and is intended to help identify potential issues and concerns the BLM should consider while updating the Sunday Mine mining plan.

Located in western San Miguel County Colorado, the Sunday Mine Complex incorporates five individual mines: the Sunday, the Carnation, the Saint Jude, the West Sunday, and the Topaz mines. Existing disturbances at the five-mine complex are approximately 80 acres. The proposed plan update includes roughly eleven acres of new disturbances to enlarge a waste rock area, install vent shafts, and expand access roads.

“Mining operations have been occurring on and off at the Sunday Mine Complex for the past 40 years,” said Tres Rios Field Office Manager Connie Clementson. “We value the natural and cultural resources on public lands managed by BLM and look forward to hearing from the public as we consider updating and consolidating the current mine plans into one.”

Project documents and information, including how to provide input, are available on the BLM ePlanning project website at: The BLM will consider the public’s substantive comments on the proposal from August 15, 2022, through September 15, 2022, online or by U.S. mail at: BLM Tres Rios Field Office, Attn: SMC Mine Plan Update Project, 29211 Highway 184, Dolores, CO 81323

For more information, please contact Tres Rios Field Office at 970-882-1120. 



The BLM manages more than 245 million acres of public land located primarily in 12 western states, including Alaska, on behalf of the American people. The BLM also administers 700 million acres of sub-surface mineral estate throughout the nation. Our mission is to sustain the health, diversity, and productivity of America’s public lands for the use and enjoyment of present and future generations.