DAISY COMPLEX
The deposit type is classified as an orogenic gold deposit within the Norseman-Wiluna greenstone sequence. The accepted interpretation for gold mineralisation is related to (regional D2-D3) deformation of the stratigraphic sequence during an Archaean orogeny event. Locally, the mineralisation is characterised as a deformed vein, hosted within intermediate volcanic and volcaniclastic units and closely associated with felsic intrusive rock types of the Gindalbie Terrane. The metamorphic grade is defined as lower green-schist facies. The Daisy Complex resource extents are 2,200m strike, 700m across strike and 1,200m down dip and open at depth. These extents host approximately 78 known ore zones (ore domains).

MOUNT BELCHES CENTRE
MAXWELLS
The Maxwells deposit is hosted within the lower ‘Maxwells’ member. The Mount Belches group is located in the southern Eastern Goldfields Superterrane, Yilgarn Craton, Western Australia. The iron formation is a silicate/oxide-facies unit with over printing sulphides, which has undergone metamorphism (upper-greenschist facies) and deformation (two generations of folds). The gold deposits are hosted in both the hinge zone and along the limbs of a regional scale, chevron folded BIF package. Gold dominantly occurs as inclusions of native gold and/or electrum within or around pyrrhotite, magnetite, and arsenopyrite, and economic mineralisation is typically restricted to the BIF horizons. The Maxwells resource extent consists of 2020m strike; 440m across strike; and 790m down dip and open at depth.

COCK-EYED BOB
The Cock-eyed Bob is hosted within the upper ‘Santa Clause’ member of the Banded Iron-Formation (BIF) of the Mount Belches group. The Mount Belches group is in the southern Eastern Goldfields Superterrane, Yilgarn Craton, Western Australia. The iron formation is a silicate/oxide-facies unit with over printing sulphides and has undergone metamorphism (upper-greenschist facies) and deformation (two generations of folds). The gold deposits are hosted in both the hinge zone and along the limbs of a regional scale, chevron folded BIF package. Gold dominantly occurs as inclusions of native gold and/or electrum within or around pyrrhotite, magnetite, and arsenopyrite, and economic mineralisation is typically restricted to the BIF horizons. The Cock-Eyed Bob complex’s resource extent consists of 1150m strike; 700m across strike; and 700m down dip and open at depth.

SANTA
The ‘Maxwells’, CEB and ‘Flora Dora’ deposits are hosted within the lower ‘Maxwells’ member of The Mount Belches group and the ‘Santa’ deposit is hosted within the upper ‘Santa’’ member both members are located in the southern Eastern Goldfields Superterrane, Yilgarn Craton, Western Australia.
The iron formation is a silicate/oxide-facies unit with over printing sulfides and has undergone metamorphism (upper-greenschist facies) and deformation (two generations of folds). The gold deposits are hosted in both the hinge zone and along the limbs of a regional scale, chevron folded BIF package. Gold dominantly occurs as inclusions of native gold and/or electrum within or around pyrrhotite, magnetite and arsenopyrite, and economic mineralisation is typically restricted to the BIF horizons. The Santa resource extent consists of about 2900m strike; 900m across strike; and 500m down dip and open a depth.

ALDISS CENTRE
The Aldiss Area gold deposits lie within a north-trending ductile shear zone as Karonie Main and West Zones, Spice, Atreides and Tank. It consists of a series of sheared amphibolite facies, mafic rocks, with remnant veining and late-stage faulting. Several ‘late stage’ porphyries intrude the host rock. The Karonie resource extent consists of 1600m strike; 500m across strike; and 420m down dip and open at depth.

DAISY CENTRE
Mining at Daisy Complex utilizes a single boom jumbo for ore development and longhole stoping between sill drives. All stope panels are assumed to have a minimum width of 2.4m and variable dilution is added at 0.0 g/t when mining each stoping block.

Major assumption made for optimisation parameters include minimum stoping widths of 2.4m and maximum stope height of 15m. Minimum mining width parameters for hand held and mechanised mining were set at 2.4 metres, based on current experience at the Daisy Complex. An additional 20% dilution factor is then applied. Mining recovery factor of 80% was applied to account for ore loss in pillars and unplanned ore loss. Infrastructure to support mining operations is already in place at the Daisy Complex.

The Daisy Complex production sourced from Haoma West, Lower Prospect, Easter Hollows and remnant mining areas. Access to the Easter Hollows zone (located ~350 metres to the west of other production areas) was established in the first quarter of the year and provides a shallower mining front and a significant exploration opportunity, with 1,000 metres of known plunge extent and improved drill access to target infill and extensional opportunities. In FY22, ore from the Daisy Mining Centre will continue to be sourced from Haoma West and Lower Prospect lodes with an increasing proportion of ore soursed from Easter Hollows as more stoping fronts are progressively brought onlain.

MOUNT BELCHES CENTRE
MAXWELLS
Longhole open stoping was selected as the mining method for Maxwells. Diluted stopes shapes above the cutoff grade were created. Stopes were then excluded from the Reserve by the following criteria:
-Stopes above the 1219mRL
-Isolated stopes which could not support access development
-Stopes which intersected the open pit or part of crown pillar.

Decline and level development was designed to ensure each stope could be accessed. Maxwells is a vertical narrow orebody. Longhole stoping is a standard mining method for vertical narrow orebodies.

Assumptions regarding geotechnical parameters are based on design parameters recommended by an external consultant. A hydraulic radius of 9 was determined to be a stable stope span (40mH x 43mL). The assumptions used to determine the minable shapes was a minimum ore width of 1m wide plus the dilution on each wall of 0.5m. A 16mH x 10mL stope dimension was also applied to determine the mineable shapes above the cut-off grade.

Mining recovery factor of 85% was applied to account for ore loss in pillars and unplanned ore loss. A haulage decline and ventilation decline/rises have been designed.

COCK-EYED BOB
Longhole open stoping was selected as the mining method for Cock-eyed Bob. Diluted stopes shapes above the cut-off grade were created. Isolated which could not support access development stopes were then excluded from the Reserve.

Decline and level development was designed to ensure each stope could be accessed. Mining recovery (85%) was then applied to account for ore left in support pillars and unplanned ore loss.

Cock-eyed Bob is a vertical narrow orebody. Longhole stoping is a standard mining method for vertical narrow orebodies.

Assumptions regarding geotechnical parameters are based on design parameters and mining from the 1420 to 1125 levels between 2011 and 2021. A hydraulic radius of 7.4 was determined to be a stable stope span (48mH x 28mL).

The assumptions used to determine the minable shapes was a minimum ore width of 1m wide plus the dilution on each wall of 0.5m. A 16mH x 10mL stope dimension was also applied to determine the mineable shapes above the cut-off grade.

Mining recovery factor of 85% was applied to account for ore loss in pillars and unplanned ore loss. A haulage decline and ventilation rises have been designed.

SANTA
Underground
Longhole open stoping was selected as the mining method for Santa. Diluted stopes shapes above the cut-off grade were created. Stopes were then excluded from the Reserve by the following criteria:
-Isolated stopes which could not support access development
-Stopes which intersected the open pit or part of crown pillar.

Santa is a near vertical orebody. Longhole stoping is a standard mining method for vertical orebodies. Assumptions regarding geotechnical parameters are based on design parameters recommended by the onsite Geotechnical Engineer. The assumptions used to determine the minable shapes was a minimum ore width of 3 metres wide plus the dilution on each wall of 0.5m. A 20mH x 10mL stope dimension was also applied to determine the mineable shapes above the cut-off grade.

The Santa underground operation will be paused in Q1 FY22 following exploration success which identified a potential cut back to the historical Santa open pits and provided further definition to Santa underground Mineral Resources at depth.

open pit
The Santa open pit is a cut-back to the existing Santa, Flycamp and Santa Craze pits. The proposed Santa Open Pit is to be operated using conventional excavate, load and haul methods. These methods have been used previously at Santa and the current Aldiss open pit operations. The pit design is based double lane ramps to within 50m of the pit floor. A minimum mining width of 20m is designed in areas of the cut-back to allow enough room for the mining equipment to operate.

ALDISS CENTRE
KARONIE
The standard excavate, load and haul method has been chosen as the appropriate mining method. The choice of the excavate, load and haul method was deemed appropriate due to the ore thickness, access, and nature of the geology. Mining dilution was assigned based on ore body width and minimum mining widths. This equates to an average of 13% dilution across the deposit. Mining recovery factor (95%) in an assumption made based on using similar mining operations and mining techniques. All infrastructure is in place for mining of Karonie.

TANK/ATREIDES
Open Pit
The standard excavate, load and haul method has been chosen as the appropriate mining method. The choice of the excavate, load and haul method was deemed appropriate due to the ore thickness, access, and nature of the geology. The mining method is currently used at the Aldiss Open Pits. Mining dilution was assigned based on ore body width and minimum mining widths. This equates to an average of 10% dilution across the deposit. Mining recovery factor (95%) in an assumption made based on using similar mining operations and mining techniques. All infrastructure is in place for Tank, as part of the Aldiss Project.

Removal of overburden and top soil ramped up at the Atreides and Tank open pits during the last quarter of FY21. Atreides and Tank open pit activity will continue until Q2 FY22. The Tank open pit is the first stage of an integrated open pit/underground operation with portal access to the Tank South underground to be located within the Tank open pit.

Underground
The Tank South Underground economic lode is approximately 90m high x 160m long and 12m wide. The mining method selected for the Tank South Underground is sublevel long-hole stoping. Primary and secondary stopes will be mined to allow full extraction of the ore. Primary stopes will be filled using a consolidated fill via boreholes directly from the surface into the crown of the stope. Stopes will be up to 90m high and 30m long.

Underground access will be established via a portal in the southern end of the Tank open pit with stoping levels to be accessed by a 1 in 7 decline (5.0 mW by 5.5 mH) with levels 20 to 25 m apart. The ore drives are designed at 4.8mW by 4.8mH allowing large loaders onto ore levels to achieve high production rates. Dilution has been added by applying a 0.5m hanging wall and 0.5m foot wall dilution to each stope. A 95% mining recovery has been applied to account for unplanned ore loss. Stope ore is blasted using conventual blasting techniques and bogged using remote loaders.

The three inpendent and self-sufficient Mining Centres at Mount Monger are the Daisy Complex, Mount Balches and Aldiss Mining Centres. These Mining Centres feed the 1.3Mtpa Randalls mill.