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Posted on: July 20, 2021


072221 Smelter

The week of September 13th, EPA and ADEQ will be completing a physical assessment of the former smelter property to analyze options to address safety hazards, including additional fencing and/or tearing down what remains of these structures.


Two to three weeks after the assessment, the contractors will provide EPA and ADEQ with information on the options and scope for the work; materials, equipment and expertise needed, and a cost estimate to move forward. 


The Town of Dewey-Humboldt and the EPA continue to ask people to stay away from dangerous areas located on private property. Both the smelter and Iron King Mine properties are dangerous and contain safety hazards and chemical hazards that could pose a health risk. Please follow posted warnings and talk with your children about staying away from these areas. If you see children, or anyone else, near the smelter structures or tailings pile, please notify the Yavapai County Sheriff’s office (YCSO) at (928) 771-3260. YCSO is providing extra patrols around the property to help with safety and security.


For more information on the Iron King Mine – Humboldt Smelter in Dewey-Humboldt click on the following links: 

     IRON KING MINE - HUMBOLDT SMELTER | Superfund Site Profile | Superfund Site Information | US EPA 

     Fact Sheet: Stay Away From Dangerous Properties (


If you have any questions, please contact Yolanda Sanchez with the EPA; Email: | Phone: 415-972-3880 OR contact Barbara Boschert with ADEQ; Email: | Phone: 602-292-0218

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