[6][7] Saracen Mineral Holdings Limited acquired its share of the mine on 28 November 2019, when it purchased Barrick Gold's 50% stake.

[3][9][10] Most of the gold mined in the Fimiston Open Pit occurs within ore lodes formed by ancient shears in a rock unit called the Golden Mile Dolerite.

The concentrate is then treated at an IsaMill Ultra Fine Grinding (UFG) mill at Fimiston and then cyanidised, or trucked to the Gidji Processing Plant, 20 kilometres north of Kalgoorlie.

At Gidji, the concentrate is treated in ultrafine grinding (UFG) mills, and then subjected to cyanide extraction of gold.

[11] Prior to the installation of the UFG mills, concentrate was treated at Gidji in two circulating fluid bed roasters.