Our proposal

As part of our desire to keep adding value and to meet contemporary expectations, we are seeking to modernise the environmental approvals for our Huntly Bauxite Mine and Pinjarra Alumina Refinery.

In doing so, we have submitted the following plans for environmental assessment by both the State and Commonwealth:

  1. Increase alumina production at Pinjarra refinery by 5% from 5 million tonnes per annum (Mtpa) to 5.25 Mtpa.
  2. Transition the Huntly mine into the Myara North and Holyoake regions (see map).
  3. Increase the rate of mining to supply up to 2.5 Mtpa of bauxite for export.

Since lodging our proposal in June 2020, we have been undertaking extensive studies into relevant environmental, social and engineering factors and consulting widely with stakeholders and communities.

On the back of this ongoing work, we have varied our proposal with approval granted by the State and Commonwealth. The Holyoake Mine Study Area has been reduced by 1,012 hectares (ha) primarily to address potential amenity impacts on private properties, the Bibbulmun Track and Pinjarra Williams Road. Two study areas covering 299 ha in total have been added at Pinjarra refinery for water storage and associated facilities.

The potential maximum clearing area at the refinery has increased from about 10 ha to up to 89 ha. The potential maximum clearing area for mining has been reduced by the corresponding amount, so from 6,700 ha to 6,621 ha. This is in addition to the 200 ha per year cleared for the operation of the Kwinana Alumina Refinery.

Environmental Assessment Factsheet


Seeking approval for:

  • 5% increase in alumina production at Pinjarra refinery
  • New mining areas of Myara North and Holyoake
  • Mining for 2.5 Mtpa of bauxite for export