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Cross Gold Mine <br />December 2024 U-4 <br /> <br /> <br />Inspection of liner construction will occur at the following steps: subgrade preparation, base material <br />installation, liner placement and welding, and liner anchoring. <br /> Pipe Installation – Minimum Standards <br />Clear pipe path to ensure positive flow from end to end. Support pipe sections as required to ensure <br />positive flow. Weld pipe sections according to manufacturer specifications. Inspect welds and <br />connections prior to charging pipe with fluid. Inspection of pipe installation will occur at the following <br />steps: route clearance, support installation, pipe joining, and pipe leak testing, and final fluid charging. <br />2. Water Handling <br />Groundwater and surface water discussions, data, and designs are all detailed in Exhibit G. <br />Map C-2 shows the layout of the mine water handling system from the portals to the discharge point. <br />Mine water handling systems are detailed in Appendix G-2. Appendix G-1 details surface water <br />handling systems. <br />3. Ore Handling <br />Map C-2A and C-2B shows the layout of the ore handling system at the Cross Gold Mine. Numerical <br />references [#] in this section refer to the locations shown on Maps C-2A and C-2B. Currently all ore <br />mined at the Cross Gold Mine is transported offsite for processing. The operator is working to develop a <br />full mill design for construction at the Cross Gold Mine for flotation. This mill will be an Environmental <br />Protection Facility and thus covered by a stand-alone revision detailing its final design specifications, <br />construction plans, quality control, and final construction certification. A conceptual mill design and plan <br />is included in this 112 DMO narrative for general purposes until the final design is ready. <br /> <br />Waste rock generated during development of mining is generally inert biotite gneiss host rock. <br />Mineralization is confined to metal bearing veins in almost all instances. If mineralized rock is identified <br />during development of drifts, stopes, or other underground workings that is not target as ore, it will be <br />segregated from other waste rock and sent to the ore building for handling. Waste rock will be sampled <br />according to the ore sampling plan but at frequency of one sampling event every 10,000 tons. <br />4. Conceptual Mill Plan <br />Metal bearing ores will be processed at the mill. The Cross Mine Mille process operations will include <br />crushing [5], grinding [9], froth flotation concentration [11], and dewatering and packaging of precious <br />metal mineral products [12]. Tailing from the flotation process is delivered to the paste mixing facility <br />[16]. Fresh water is introduced into processing as needed [9-11] to support any given processing steps <br />operations.