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Cross Gold Mine <br />December 2024 D-3 <br /> <br /> <br />fencing for visibility. Due to its current condition and the potential underground connection to the Idaho <br />Tunnel, personnel entry is not possible until further evaluation. An assessment will be conducted to <br />determine the shaft’s best operational use; at this time, it is proposed for use as a ventilation source <br />and emergency escapeway. <br />The Potosi Shaft will be fenced. a permanent fence will be installed around the Potosi Shaft area to <br />enhance security. The existing temporary fencing will be removed, and a perimeter measuring <br />approximately 45 feet by 60 feet will be established. The enclosure will consist of a 6-foot-high chain- <br />link fence topped with 1 foot of barbed wire, resulting in an overall height of 7 feet. Each post will be <br />anchored in concrete footings at a depth of 2.5 feet, and both top and bottom support beams will be <br />installed for additional stability. Access will be controlled by a single 6-foot-wide locking gate equipped <br />with barbed wire and padlock protection. Hazard and no-trespassing signage will be displayed on all <br />four sides of the fencing. During active operations, the area will be monitored using the mine’s Wi-Fi <br />video security system, ensuring ongoing security and safety. <br /> <br />The Idaho Tunnel is currently used for exploration drilling. That use will continue until closure and <br />reclamation. GIR anticipates that core samples and a small amount of waste rock will be generated <br />during exploration drilling. Core samples will be stored in the site office. Waste rock (approximately <br />1,400 cu yds) will be stored in the waste rock storage area. <br />The Idaho Tunnel is in the Operations Area and can be seen on Exhibit C maps. When not in use a <br />locking steel gate prevents unauthorized access. The area is monitored using the mine WIFI video <br />security array. <br /> <br />The Cross Adit is currently used for mine access. It can be found in the Operations Area and can be <br />seen on Exhibit C maps. Its use will continue until closure and reclamation. The Cross Adit is located <br />on the main mine site. When not in use a locking steel gate prevents unauthorized access. The area is <br />monitored using the mine WIFI video security array. <br /> <br />The Cross Ventilation and Escapeway Shaft supports the Cross Mine by providing ventilation, serving <br />as an emergency escape route, and facilitating mine rescue operations. This role will continue until <br />closure and reclamation. Located in the Operations Area, as shown on the Exhibit C maps, the shaft is <br />situated on the main mine property. It is clearly posted, flagged with a snow fence, and covered with a <br />protective screen. In addition, the area is continuously monitored through the mine’s Wi-Fi video <br />security system. <br />5. Ponds and Water Infrastructure <br />As of 2023 there are five lined ponds at the Cross Caribou Mine: Ponds 1, 2, 3A, 3B, and 3C. The <br />locations of the ponds are shown on Exhibit C maps. The ponds are used to treat stormwater and water