Pilot Plant Test Work

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Date Published: 
December 2014

Rio Tinto is evaluating the Resolution Copper deposit located in Arizona. The main interest for this project is copper, with a secondary value in molybdenum. The principle objectives of this project were to:

  • Construct a composite and assess the chemical and mineralogical characteristics of the sample.
  • Conduct limited metallurgical laboratory test work to confirm the performance for two flowsheets, namely a bulk circuit and selective circuit.
  • Prepare pilot plant feed material, and operate a pilot plant to evaluate continuous metallurgical performance of both flowsheets.
  • Produce pilot plant bulk concentrates for subsequent copper-molybdenum separation testing.
  • Produce pilot plant flotation products for testing by other vendors.
  • Produce pilot plant products for environmental testing.
Reference Information: 

ALS (2014) Pilot Plant Test Work, Resolution Copper Project, Rio Tinto. Report KM4420, December 19, 2014.

Cited In: 
GPO - Appendix Q

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EIS Status Update - Mar 2019

As of March 15, a Draft EIS update is now available under the ‘Public Involvement’ tab. To view the update, click here.

View EIS Status Update

EIS Status - Feb 2019

  1. Proponent submits revised Plan of Operations [Sep 2014]
  2. Federal Register Notice of Intent to prepare EIS [Mar 2016]
  3. Public scoping period and scoping meetings
    [5 meetings between Mar-Jun 2016; comment period extended from 60 days to 120 days, closed Jul 18, 2016 ]
  4. Compile and review existing data
  5. Prepare project description and identify project alternatives
  6. Publish Alternatives Evaluation Report [Sep 2017]
  7. We Are Here
    Validate Baseline Information; analyze environmental effects
  8. Prepare Draft EIS
  9. Federal Register Notice of Availability of Draft EIS
  10. 90-day public review and comment period, with public meetings
  11. Respond to public comments and prepare Final EIS
  12. Federal Register Notice of Availability of Final EIS and Draft ROD
  13. 45-day Public Objection Period
  14. Resolve objections to Final EIS and draft ROD
  15. Issue Final Record of Decision

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Forest Points of Contact

Media & General Info
John Scaggs
jscaggs@fs.fed.us

Project Manager
Resolution Copper
Mary Rasmussen
mcrasmussen@fs.fed.us

Apache Leap Special Management Area
Apache Leap SMA website