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Permit M-1977-493—Climax Mine Table E-1: Post-Mining Cover Areas by Facility Facility Post-Mining Land Use McNulty OSF WL North OSF WL Mayflower TSF RL' Tenmile TSF RL' Robinson TSF RL' Robinson Lake Area RL 1 Dam RL 3 Dam RL 5 Dam RL Mill WL Pit Area Industrial RL west of Highway 91 and WL east of Roads Highway 91 Notes: 1. 3 percent of the tailings impoundment surfaces will consist of tree planting areas that will be designated as Wildlife land use. E-3 Reclamation Success Climax has devoted significant time and expense to researching, testing, and developing practical and workable solutions to reclamation challenges in high-altitude environments. Since the 1960s, Climax has been at the forefront in developing reclamation and revegetation techniques that are in use at many other high-altitude mines as well as ski areas, highway projects, and other high-altitude developments. Learning from past reclamation projects and years of experience, Climax has developed strategies for high- altitude revegetation that have proven successful. The strategies outlined in this reclamation plan reflect these lessons learned. Climax will continue to develop and implement innovative reclamation technologies to improve reclamation success. To date, Climax has placed nearly 1,300 acres into its reclamation programs. Projects have included capping and revegetating existing dam faces, capping and revegetating TSFs, demolition of obsolete buildings and facilities, revegetating existing OSFs, reclaiming historic mine sites on the property, and developing freshwater facilities from a reclaimed TSF and a reclaimed gravel pit. Several of these innovative and highly successful reclamation projects are described in detail below. E-3.1 Eagle Park Reservoir Climax's Eagle Park Reservoir was historically a molybdenum oxide TSF and included Climax Mine's 4 Dam. In 1996 and 1997, approximately 1.3 million tons of molybdenum oxide tailings were removed from the TSF and the site was reclaimed as a freshwater storage facility. Eagle Park Reservoir now provides water storage for water users downstream in the Eagle River Basin. 4 Dam was taken over by Eagle River Water& Sanitation District and is no longer owned, operated, or maintained by Climax. The stored water in the reclaimed reservoir meets or exceeds stream standards, and the revegetation on the banks equals or exceeds the vegetative cover and vigor of nearby native communities. This project earned Climax the DRMS's 1998 Hardrock Reclamation Award. E-3.2 Robinson Tailings Storage Facility Reclamation Capping began on Robinson TSF in the 1980s with direct hauled overburden from the open pit mining operation. Prior to 2005, approximately 300 acres of the TSF surface were drained and capped starting on the drier south and west edges. In 2005, Climax received DRMS approval (TRA 3)for a combined wet and dry cap on the TSF Exhibit E E-2 May 2024