Call & Nicholas, Inc. (CNI) was contracted by Augusta Resources in spring 2006 to conduct a geotechnical study focusing on slope-angle recommendations for the Rosemont proposed Rosemont Copper Mine located near Tucson, Arizona. The primary goal of this project was to provide final pit slope angles for a feasibility-level pit design. A secondary goal of this project was to perform fragmentation estimates for use in crusher sizing.
This chapter presents recommended slope angles, fragmentation estimates, and recommendations regarding future work appropriate for a latter stage slope design. Details regarding data collection, laboratory testing, slope stability analyses, and fragmentation work completed as part of this project are presented in subsequent chapters of this report.
Pratt, R., and D. Nicholas. 2009. Memorandum: Preliminary Findings from Slope Stability Review. Prepared for Rosemont Copper Company. Tucson, AZ: Call and Nicholas, Inc. June 19.