Disa Tech receives EA/FONSI for Mary Ann site, forms Disa Uranium

[Marlin]

Disa Tech receives EA/FONSI for Mary Ann site, forms Disa Uranium

https://www.ans.org/news/2026-08-18/article-8303/disa-tech-receives-eafonsi-for-mary-ann-site-forms-disa-uranium/

[Core Content]

The Nuclear Regulatory Commission issued an environmental assessment and finding of no significant impact for the use of high-pressure slurry ablation technology at the Mary Ann abandoned uranium mine site in Colorado. Disa Tech plans to process 1,656 cubic meters of waste to recover uranium and thorium. The company also formed a subsidiary, Disa Uranium Corp., to manage these remediation efforts and expand its portfolio of domestic uranium assets.

The Nuclear Regulatory Commission has issued an environmental assessment and finding of no significant impact to Disa Technologies for company's use of its NRC-licensed high-pressure slurry ablation (HPSA) technology to remediate abandoned uranium mine (AUM) waste at the Mary Ann AUM waste pile site in Montrose County, Colo.

Disa Tech, a Wyoming-based mineral processing company, submitted a premobilization notification to the NRC in March to use its HPSA technology at the Mary Ann site. The NRC is considering approval of the PMN, which would officially allow HPSA operations to proceed.

Plans for Mary Ann: At the Mary Ann site, Disa Tech plans to process approximately 1,656 cubic meters of AUM waste, with about 1,839 tons of fines concentrates (material containing the concentrated uranium and thorium) resulting from HPSA processing. The company also plans to establish a radiologically restricted area that will include the HPSA treatment equipment, a fines concentrates storage area, the Mary Ann AUM waste pile, and a crushed rock stockpile.

Read the full article at ans.org:
https://www.ans.org/news/2026-08-18/article-8303/disa-tech-receives-eafonsi-for-mary-ann-site-forms-disa-uranium/