Altura’s Pilgangoora Lithium Project occurs at the southern end of a zone of pegmatite intrusive dykes within the synformal Pilgangoora greenstone belt. The pegmatites are hosted within amphibolites which have a mafic and ultramafic volcanic origin. A total of 13 mineralised pegmatites have been identified and these occur as a set of stacked lodes generally striking 010 030oNNE and dipping 25-40oESE. The dykes generally range from 8-14m thick however there are areas where the pegmatites form lenticular pods and are much thicker (up to 64m).

Based upon the completed drilling, the pegmatites appear to be confined to a NNE trending corridor which is approximately 1600 metres long (north to south), 550 metres wide (east to west) and 450m deep. Mineralisation is present at surface for some lodes with most mineralised lodes starting from within 10m of surface.

The mineralised pegmatites are located approximately 1km east of a granite contact. There are several barren pegmatites located in the zone between the granite contact and the mineralised pegmatite zone. The granite contact and barren pegmatites were identified via sterilisation drilling carried out for the proposed infrastructure and waste dump areas.

The reason for this structural and or geological control within the deposit area is not fully understood however the distance from the granite contact is such that mineralisation in the pegmatite is confined to lithium and rubidium (almost wholl ........

Mining will be undertaken by conventional bulk mining methods utilising EX2500 hydraulic excavators, CAT785 dump trucks and drill and blast delivering ore to a ROM stockpile. Ore will be trucked directly from the blasted faces to the ROM stockpile and fed to the primary crusher using a Front-End Loader (FEL). There has been allowance made for blending from the ROM and external stockpiles. The mining operation is 12-hour shifts with crews working day shift and night shift once Stage 2 operations begin to ramp up.

The pits will be mined using 3m flitches for ore and waste. This height gives reasonable production efficiency while keeping dilution to a minimum. In waste, the flitch height could be increased to improve efficiency within the limits of the equipment size.

Pit Design Parameters:
- Bench Height - 6 m;
- Batter Angle - 75 Degrees;
- Stack Height - 12 m;
- Stack Berm Width - 10 m;
- Inter-ramp Angle (IRA) - 42.25 Degrees;
- Geotechnical Catch berm interval - 80 m;
- Catchment Berm Width - 15 m;
- Ramp Width - 24 m.

All haul roads used by mine equipment need to accommodate a Caterpillar 785, 130t dump trucks. The main ramps with an overall width of 3.5-4 times the truck width using a 10% gradient. This allows for safe passing of trucks inclusive of wall side drainage and pit side bunding. For the benches at the pit bottom (up to 40 metres overall height), a single lane ramp running width of 2.0 ti ........

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