East Deposit
The East Deposit, located 7,000 ft east of the North Deposit, measures approximately 2,000 ft by 1,200 ft and consists of flat-lying to gently dipping, bedding-controlled, stacked skarn-IOCG mineralized zones within the limestone of the Mason Valley Formation at depths of 1,400 to 2,200 ft. The East Deposit is defined by drill holes spaced approximately 175 to 250 ft apart.

Higher grade copper occurs mainly in dolomitized limestones and skarn-chalcopyrite-magnetite-pyrite breccias immediately adjacent to diorite or diorite endoskarn. Much of the high magnetite rock that grounds the East Deposit is within diorite endoskarn. A good amount of continuity is evident in the East Deposit with mineralization possibly continuing and thickening to the west. The area between the East Deposit and the North Deposit still requires detailed exploration to accurately determine the lateral extent of each Deposit.

E2 Deposit
The E2 Deposit is a steeply northwest-dipping lens of high grade copper-magnetite skarn-IOCG breccia within the Mason Valley limestone, which lies on the hanging wall of an endoskarn sill. The lens has been explored along approximately 1,200 ft of strike length, is 40 to 120 ft thick, and is locally continuous for at least 1,600 ft down-dip.

The chalcopyrite-magnetite mineralization follows the marble front, similar to the East Deposit. A major east-trending rotational fault appears to exist between the two deposi ........

The Underground Project is planned as a 5,000 stpd operation and has one mining area. The Eastern Area is planned to be mined by underground methods, specifically longhole stoping, with predominantly cemented paste fill (CPF) methods.

Access to the mine will be via a vertical shaft. Mining will be performed using the productive mechanized transverse longhole mining method, with CPF in the primary and some secondary stopes, and uncemented paste fill (UPF) or unconsolidated rock fill (URF) of remaining secondary stopes. While waste rock can be hoisted to the surface and disposed of on the waste rock stockpile, this is only planned during initial development, until the surface paste fill plant is commissioned. Once at steady-state production, all waste rock is planned to remain underground to be used as backfill for secondary stopes.

One production/service shaft and three ventilation/emergency egress shafts are included in the mine design. Stopes will be 100 ft high by 50 ft wide for the ES and E2 zones, and 75 ft high by 50 ft wide for the EN zone.

Mining will be carried out using longhole drilling and blasting, with ore and waste material mucked using load-haul-dumps (LHDs), direct to ore passes or to remuck bays situated for optimum materials handling. Ore material will be transported via haul trucks and/or ore passes to the coarse ore bins (COBs) for storage before being hoisted out of the mine. Haul trucks will be used to transport ore mater ........

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