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.

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 overlying the higher-grade strandlines. 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 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 horizons of the sand tailings to improve soil quality prior to tailings profiling. The surface will then be re- contoured where necessary, in line with pre-mining surface contours or other agreed topography, before replacement of topsoil and subsoil.

Mine closure will involve the removal of all site infrastructure (certain infrastructure, such as bores, may be retained by prior agreement with landholders and the DMP), remediation of any contaminated soils and ground preparation (topsoil replacement, drainage works and ripping) for revegetation. Post-closure activities will include monitoring groundwater and the progress of rehabilitated areas towards agreed completion criteria will be measured.

The current mine sequence is based on:
• Completing ore mining from the currently stripped Pit C; then
• Commence mining on the eastern strand Pit B at the northern end and mine to the south; then
• Once sufficient void is established in Pit B east, commence overburden removal in Pit A and Pit B west, with Pit A mining in a northerly direction and Pit B west mining in a southerly direction; then
• Commence ore mining in Pit A once the bulk of the overburden has been removed at that Pit, at reduced mining rates (due to the restricted nature of this location), in conjunction with ore mining in Pit B west; then
• After ore mining completes in Pit A and B, recommence mining in Pit C and mine to completion in a southerly direction; finally
• Mine Pit D in a southerly direction.[12.20.2019, Press Release, p.12]

The BFS is based on mining the Boonanarring deposit first, using conventional, dry, open pit mining techniques to extract the ore, and using standard gravity separation in a Wet Concentration Plant (WCP) to recover the contained Heavy Minerals (HM) into a Heavy Minerals Concentrate (HMC) for sale. The HMC will be transported by road to a storage facility at Bunbury where it will be loaded onto ships and transported in bulk to China.

The mineral processing operation will consist of two main sections:
- Slurry mining unit (SMU)
- Wet concentrating plant (WCP).

Selection of the key process stages and parameters were based upon the metallurgical testwork conducted by AML. The SMU primarily consists of:
- feed bin, vibrating grizzly feeder
- scrubber feed conveyor
- a rotating drum scrubber with trommel screen, and pumping system
- supporting equipment on a transformer skid.

The function of the SMU is to screened for oversiz ........