Hard Rock Mining | Proposed Bond Determination for Magris Talc USA, Inc. – Beaverhead Mine – PERMIT NO. 00075 | Comment Period Closes April 20, 2026

DEQ is seeking public comment on a proposed comprehensive bond determination increase of $66,188 (from $109,095 to $175,283) at the Beaverhead Mine in Madison County.

Location: Madison County 

45.221948, -112.298872  

Associated Materials:  

Legal notice  
 
Comment Period Closes: April 20, 2026
 
Submit Comments To: DEQHardRock@mt.gov  
 

Millie Olsen
Hard Rock Mining Section Supervisor 
Mining Bureau 
Department of Environmental Quality 
P.O. Box 200901 
Helena MT 59601 

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Tags: Public Comment and Hard Rock