2019-12-06_HYDROLOGY - M1977342

• Permit No: M1977342
• IBM Index Class Name: Hydrology
• Doc Date: 12/6/2019
• Doc Name: Reclamation Cost Estimate
• From: Climax Molybdenum
• To: DRMS
• Email Name: PSH
• Media Type: D
• Archive: No

Climax Molybdenum Company — Henderson Mine & Mill
Permit M-1977-342
2019 Reclamation Cost Estimate Update
Table of Contents
1 General Reclamation Update.............................................................................1
2 Site Specific Reclamation Planning..................................................................2
2.1 Vent Shaft..............................................................................................................2
2.2 Mine Site Demolition .............................................................................................2
2.3 Mine Site General Reclamation.............................................................................2
2.4 Portal Area ............................................................................................................2
2.5 Conveyor Access Road.........................................................................................2
2.6 Mill Yard and Access Road ...................................................................................3
2.7 East Branch, Horseshoe and Ute Creek Reservoirs.............................................3
2.8 Tailing Deposition Area.........................................................................................3
2.9 Main Gravel Pit below 1-Dam................................................................................3
2.10 Laydown Yard at Rectifier 6 ..................................................................................3
2.11 Mill Site Demolition................................................................................................3
2.12 Williams Fork Pump System..................................................................................4
2.13 Tailings Line and Power Line ................................................................................4
2.14 Tailing Facility Structures ......................................................................................4
2.15 Mill Water Return Pipeline.....................................................................................4
2.16 Topsoil Stockpiles and Haul Roads.......................................................................4
2.17 PC3 Overland Surface Conveyor..........................................................................4
2.18 Water Management and Treatment.......................................................................5
2.19 Mobilize-Demobilize..............................................................................................5
3 Reclamation Costs .............................................................................................6
3.1 Indirect Costs ........................................................................................................6
3.2 Repurposing..........................................................................................................6
i Dec 2019