2019-12-13_REVISION - M1980244 (60)

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ResponseSpill and CountermeasuresNEWMONT •r the Cresson Project NORTH AMFPICA Sustainability& External Relations 3 GENERAL FACILITY INFORMATION 3.1 Description of Mine Facilities The mine facilities at the Cresson Project are shown on Figure 2. CC&V's gold mining activities use conventional surface mining and ore crushing methods. Mineral recovery is accomplished by valley leaching with dilute cyanide solutions,followed by solution enhancement, carbon adsorption,then desorption,and electrowinning.Valley Leach Facilities(VLFs)and internal ponds containing cyanide solutions are double and triple lined with the incorporation of leak detection systems.The operating leach facilities,VLF-1 and VLF-2, is double-lined in areas where solution is not stored and triple lined where solution is collected and temporarily stored.The VLF systems are designed to contain the normal operating solution level,total drain-down, "wet season" precipitation, and the 100-year, 24-hour storm event. Mineral Beneficiation Facilities(also known as Adsorption Desorption Recovery or "ADR") are constructed and operated to provide containment and collection of any spills within the ADR-1 and ADR-2 buildings.The VLFs and ADRs are "non-discharging" (zero-discharge)facilities.ADR-1 and ADR-2 uses hydrochloric acid and sodium hydroxide in addition to sodium cyanide. Major equipment maintenance is performed at the Ironclad Warehouse and the New Truck Shop. Minor equipment maintenance operations and vehicle re-fueling occurs in selected field locations within the mining operation. Maintenance of mechanical equipment associated with the crushers takes place at the Primary and Secondary Crushers.The principal petroleum products used at the crushers are lubricants. Lime is stored and added to the crushed ore at the Secondary Crushers,the lime is utilized in processes at the High Grade Mill,which will began full operation in 2015/2016. 3.2 Location of CC&V Operations CC&V's Cresson Project Operations are located within the Cripple Creek Mining District,generally between the Cities of Victor and Cripple Creek.The permitted mining operations occur within one to two miles of either city. For reporting purposes the CC&V site location,expressed as latitude and longitude at the Carlton Security Access is: Latitude is 382 43' 37" North and Longitude 1052 09' 27"West. The Project area, in southern Teller County, is accessible by Colorado State Highway 67 between Victor and Cripple Creek,Teller County Road (CR)81 from State Highway 67 in Gillet Flats through Victor,from Teller CR 82/83 (Cameron Road) and from State Highway 67(north of Cripple Creek). Figure 1 shows the general location of the site. 3.3 Site Security at CC&V Operations CC&V's properties are subject to the following general security measures: (1)a substantial portion of the property is fenced with barbed wire with chain link or wire mesh and barbed wire; (2)entrances to mine property are gated and locked; (3)the permit boundaries are staked and warning signs are posted; (4) most onsite facilities are staffed on all operating shifts, so that there is a company supervisor onsite 24 hours a day,7 days a week(24/7); (5)security guards are on duty 24/7 at the Carlton Security Access entrance from State Highway 67 and at the Ironclad Security Access entrance from County Road 82; (6)security guards are on duty dawn to dusk at the American Eagles guard shack;and (7) key portions of the site are lighted during the night-time hours. Individual facility security measures(barricades, bollards, poles, locked buildings,etc.)are discussed in other sections of this plan,as appropriate. If necessary, additional facility security is detailed under Section 4.0. - _---------- ------_------ --- ---- -------- ------- -------- -- - ----. - -- --------------- Department THIS DOCUMENT IS UNCONTROLLED IN HARDCOPY FORMAT Doc Id:NA-CCV-SER-PLAN- 1930