Boonanarring is hosted in the Perth Basin, in the Pleistocene Yoganup Formation on the eastern margin of the Swan Coastal Plain.

The Yoganup Formation is a buried pro-graded shoreline deposit, with dunes, beach ridge and deltaic facies. This formation lies unconformably over the Lower Cretaceous Leederville Formation and is overlain by the Pleistocene Guildford Formation and the Quaternary Bassendean Sand

The Yoganup Formation consists of unconsolidated poorly sorted sands and gravels, with local interstitial clay and heavy minerals that occur sporadically along the Gingin Scarp, which is interpreted to be an ancient shoreline that was stable during a period of marine regression.

Boonanarring has three major strandlines of heavy minerals, which are interpreted to have been deposited during the Pleistocene in a notch in the local basement rock that may represent an ancient sea cliff. Lower grade mineralisation is present in the sands proximal to the higher-grade strandlines. Two additional strandlines, to the south-west of the main strandlines, are present in the southern part of the project area.

The basement to the strandline mineralisation is identified by the increased slimes content of the Leederville Formation or at the base of the Yoganup Formation. Mineralisation within this has high zircon concentrations.

The mineralisation of the Boonanarring deposit is hosted by the Yoganup Formation. The main geological units ........

The mining and support earthmoving activities will be delivered under a Contract Mining Agreement, where the mining contractor will be responsible for all mining and associated earthworks using a standard Schedule of Rates contract incorporating normal dayworks provisions. Image will be responsible for statutory duties, technical services, potable water, power and dewatering operations.

Scrapers and/or excavators and trucks will be employed to mine the ore to a stockpile located at the SMU. A Cat 988 loader or similar will then feed the SMU from the stockpile at a rate of 500 t/h. Using this type of fleet will give flexibility for ore blending, not only when mined but also off the stockpile at the SMU. In addition, use of this method will mean the SMU can stay in one place for up to 12 months, which will minimise downtime due to SMU relocations.

The Boonanarring deposit is split into two strands; East and West. The eastern strand is generally higher in heavy mineral content than the lower grade western strand. To get consistency of the grade of the ore being fed to the WCP, the eastern and western strands will be blended. Ore feed has been constrained to a maximum of 500 t/h at 85% utilisation of SMU feed. This will be the primary production constraint.

Following initial pit establishment, the mine void will be progressively backfilled with overburden, sand tailings and clay fines. Dry clay from solar drying ponds will be mixed into the upper ........

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