Written response on waste rock production tonnage - timing and ratios, removal of heap leaching process from the Preferred Alternative, stockpiling of PAG waste rock material, heap leaching stockpile of oxide ore, waste rock pile ability to neutralize acid generation, waste rock segregation and testing
Rosemont Copper Company. 2012e. Response to December 4, 2012 Forest Service Letter. Letter from Katherine Ann Arnold, Vice President, Environmental and Regulatory Affairs, Rosemont Copper Company, to Jim Upchurch, Forest Supervisor, Coronado National Forest. Document No. 072/12-15.3.1. Tucson, AZ: Rosemont Copper Company. December 14.