The Century zinc-lead-silver deposit has a geological resource of 118 million tonnes averaging 10.2% zinc, 1.5% lead and
36 g/t silver. It lies approximately 250 km NNW of Mt Isa in NW Queensland, Australia, and is hosted by middle
Proterozoic age siltstones and shales of the Lawn Hill Formation. Within the orebody, most mineralisation occurs
selectively within black shale units as fine grained sphalerite and galena lamellae with minor pyrite and siderite. The black
shale units are separated by weakly mineralised sideritic siltstone horizons. The deposit is unmetamorphosed and only
weakly deformed, displaying excellent lateral stratigraphic and grade continuity.