Mining Projects

Workman Creek Uranium Mine Sites Engineering Evaluation/Cost Analysis

This project is a Comprehensive Environmental Response Compensation and Liability Act (CERCLA) cleanup of former uranium mines in Workman Creek area on the Pleasant Valley Ranger District of the Tonto National Forest.  More information about this project can be found online at Workman Creek Uranium MineSites Engineering Evaluation/cost Analysis.

Resolution Copper Project and Land Exchange Environmental Impact Statement

On March 18, 2016, the Tonto National Forest issued a Notice of Intent to prepare an EIS for the Resolution Copper Project and Land Exchange. Two separate but related components will be analyzed in the EIS, as well as any necessary amendments to the Tonto National Forest Land and Resource Management Plan:

Approval of a plan of operations submitted to the Tonto National Forest in November 2013.  Exchange of 2,422 acres of public land (known as the Oak Flat parcel) with Resolution Copper Mining, LLC (Resolution Copper), in return for 5,344 acres elsewhere in Arizona.

More information about this project is available online at the Resolution Copper Project and Land Exchange Environmental Impact Statement .

Resolution Baseline Hydrological & Geotechnical Data Gathering Activities

Resolution Copper Mining, LLC currently is conducting exploratory drilling on National Forest Service lands in the Oak Flat area to better understand the extent and quality of the copper ore body. 

RCM has collected groundwater, geology and soils data to inform technical design considerations for the proposed tailings storage facility located on National Forest System lands west of Superior, Arizona. In August 2016, the Forest Supervisor for the Tonto National Forest approved an environmental assessment and a plan of operations allowing RCM to gather necessary data to inform the proposed construction of the tailings storage facility.

Field activities involving the construction of wells, test pits, forest road improvements and laydown yards were completed in February 2017. Data collection continues and is critical to understanding the baseline environmental conditions of the area. The baseline data will be used to inform the impacts analysis for the EIS and will support a reasoned choice among alternatives for where to site the proposed tailings facility. 

A group of organizations along with the San Carlos Apache Tribe (plaintiffs) filed suit in U.S. District Court of Arizona on September 15, 2016, opposing the EA and FONSI.  Judge David Campbell issued an order on Sept. 6, 2017, refuting all plaintiff’s claims and allowed the FONSI to stand unchanged.

More information about this project can be found online at  Resolution Baseline Hydrological & Geeotechnical Data Gathering Activities .

Pinto Valley Mine Environmental Impact Statement

On March 28, 2017, the Tonto National Forest issued a Notice of Intent to prepare and EIS for approval of a Mining Plan of Operations submitted by Pinto Valley Mining Corp.

The EIS will help the Forest Service evaluate and disclose the potential environmental effects from the proposed expansion of an existing open pit copper and molybdenum mine onto National Forest System lands. The proposal also would involve tailings disposal on National Forest System lands.

More information about this project is available online at Pinto Valley Mine Evironmental Impact Statement.