The majority of the Project area is underlain by gentle to moderately southward-dipping rocks of the Belt Supergroup. The Belt Supergroup lithofacies are juxtaposed against gently south-dipping Cambrian sedimentary rocks along the VVFZ. To the north of the Project area, Belt Supergroup rocks are also exposed, below the basal Cambrian unconformity. Intermediate to mafic, Early Tertiary intrusive dykes and sills occur within the Belt Supergroup. Late Tertiary sedimentary lithofacies unconformably overlie all other units in the area.

Potentially economic Cu mineralization has been identified in the Newland Formation at the UCZ and the LCZ. The mineralization in both of these deposits is largely hosted by massive sulphide units referred to as the USZ and LSZ, respectively. Although not included in the MOP application, Cu mineralization also occurs at Lowry situated 3 km SE of the Johnny Lee deposit (Figure 7.2). Mineralization at Lowry is hosted by the LSZ and the MSZ. In order to discriminate between Johnny Lee and Lowry, the MSZ and LSZ at Lowry are herein referred to as Lowry Middle Sulphide Zone (LMSZ) and Lowry Lower Sulphide Zone (LLSZ). Mineralization at Lowry that occurs in these zones is referred to as the Lowry Middle Copper Zone (LMCZ) and Lowry Lower Copper Zone (LLCZ).

Johnny Lee Lower Copper Zone
The LCZ occurs at depths of 340 to 520 m below surface, strikes approximately EW and dips at 15° to 30° to the south. Mineralization in the LCZ i ........

Upper Copper Zone Mining Methods
The UCZ is a flat dipping deposit with multiple parallel lenses. It will be entirely extracted using DF mining methods.

The DF panels will be setup with two parallel access drifts spaced 60 - 90 m apart where possible. Primary ore drifts spaced 15 m apart will be developed from one access drift to within 5 m of the second access drift. Once the drift has completed mining, all the services will be stripped from the drift and a barricade will be built at the access. Paste and breather holes will then be drilled from the second access drift through the pillar and paste fill will be placed in the drift.

Once two adjacent primary drifts have cured, a secondary ore drift will be driven to the end of the panel in the middle of the two cured drifts. This drift will be 5 m wide with two 2.5 m wide pillars on either side. These pillars will then be extracted by drilling unsupported slashes up against the paste and mucking out on remote control. Once the secondary drift has been mined out, a barricade will be built, and the secondary drift will be filled using the same process as the primary drifts.

Once an entire panel has been mined out and both access drifts are paste filled, the pillar is mined out and then paste filled.

In areas where there is no second access to fill from, the same general sequence will be followed. However, the primary drifts will be located 10 m apart and the secondary drifts will ........

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The selected process recovery method will utilize industry standard comminution and flotation process technologies to produce a copper sulphide concentrate for market export. The design processing rate of 150 dry tph will provide for the annualized 1.2 Mtpa treatment of UG sulphide mineralization, producing 122 ktpa of copper sulphide concentrate. The process plant will operate on a continuous 24 hour-a-day basis, via two 12 hour processing shifts. The design availability of the crushing and grinding circuits will be 70% and 92%, respectively.

Cu Flotation Circuit
The Cu minerals, chalcopyrite and tennantite, will be recovered from the pyrite and non-sulphide gangue throughout the Cu flotation circuit at an elevated pulp pH of 9.5. Lime will be used to maintain the flotation circuit pH conditions. Aero 3477 will be the main copper sulphide collector and will be added in a stage-wise manner to avoid overdosing, which may result in the inadvertent recovery of the pyrite ( ........