Carnac identified a high-value Greenhouse Gas (GHG) reduction opportunity for an alumina refinery. Carnac were subsequently engaged to complete a Pre-Concept Study for technical validation of the opportunity.

Carnac identified several cost reduction opportunities for an alumina refinery via the completion of a Maximum Technical Capability Assessment (debottlenecking study). Carnac further developed the opportunities at a concept level and selected which opportunity to take forward for a prefeasibility study.

Carnac undertook an options assessment for the logistics, supply, and handling of a tailings liquor treatment reagent for an Alumina Refinery.

Carnac performed a Concept Study to understand the impact of future bauxite ore variations at an alumina refinery. Carnac assessed the impact on both current and future operations (following planned plant upgrades).

Carnac identified several high-value opportunities for an alumina refinery that would help the client gain a competitive advantage in the alumina market. One opportunity identified involved recovering reagent from a spent liquor stream. The opportunity was developed by Carnac from a concept to feasibility study level.

The client engaged Carnac to undertake a preliminary engineering assessment of required upgrades to achieve an increase in refinery throughput, which included both production generating upgrades, such as those that would increase alumina precipitation yield and liquor flows, and production enabling upgrades.

As the life of mine has developed, some pits have progressed to below water table operations. Carnac was engaged by the client to undertake a study to assess the preliminary engineering study performed internally by the client and identify further work to progress design with regards to plans for dewatering.

Carnac identified the most appropriate "fit for purpose" solution for the relocation of the existing pipeline, an activity that is required for continued mining operations in the area.

The client aims to expand production rates from 24Mtpa of iron ore to 28Mtpa by 2015. The ore is processed on site before being loaded onto rail. Carnac was commissioned to provide advice and recommendations regarding options to realise sustained production with lower operating costs, with works expected to be implemented between 2015 and 2017.

Carnac was engaged to perform mechanical engineering design and coordination for the instrumentation installation for of a revolutionary 3D Control System on a proposed Coal Reclaimer in Queensland.