Mardie Minerals Pty Ltd has approval to develop a greenfields high quality salt and SoP project and associated export facility at Mardie, approximately 80 km south-west of Karratha, in the Pilbara region of WA. The project will produce a high purity salt product, Sulphate of Potash (SoP) and other products that can be derived from sea water.

The revised proposal includes the offshore disposal of dredge spoil within a dredge material placement area (DMPA), upgrading the existing airstrip and permitting groundwater abstraction of up to 0.7 gigalitres per year (GL/yr).