The Winchester exploration area is located to the north of the Yamarna exploration area and consists of two tenements covering 91km².

Winchester is an early-stage exploration project which contains magmatic hosted polymetallic (Cu-Ni-Co-PGE) mineralisation interpreted as analogous to the Mt Venn deposit. Winchester has a higher nickel tenor in sulphides discovered to date (compared to Mt Venn and Eastern Mafic) and represents a strategically valuable asset within the Yamarna Project.