DGO Gold Limited reported the progress of diamond drilling at Yerrida, 75km south of Sandfire Resources' DeGrussa copper-gold mine and 60km northeast of Meekatharra, Western Australia. Geological logging of the maiden diamond hole at Yerrida identified a +30m zone of strong sulphide mineralization within the target zone. The sulphide mineralization includes stratabound zones of pyrrhotite and pyrite with disseminated chalcopyrite. A 1.8m interval of semi-massive pyrrhotite- pyrite from 302.2m to 304.0m was intersected. The sampling and analysis of this core will be prioritised. The diamond hole was designed to test strong alteration intersected in RC hole 20YERC0004 which intersected 132m at 1.3g/t silver from 56m in a broad zone of anomalous Au, As, Cu, Pb and Zn. Increasing concentrations of these metals with depth in the RC hole was indicative of massive sulphides at depth and potential VHMS mineralization at the contact of the Johnson Cairn shales with the Killara mafic units. The Killara Formation is now widely regarded as a stratigraphic equivalent to the Narracoota Volcanics of the Bryah Group which host Sandfire Resource's DeGrussa Cu-Au deposit. The diamond drill hole, located 400m to the north of 20YERC0004, is being drilled vertically to test for alteration and VHMS mineralization on the shale-volcanic contact within the axis of a broad synclinal trough. The pyrrhotite-pyrite observed in the diamond hole is hosted in coarser grained interbeds within a moderately to steeply dipping sequence of shales, mudstones and siltstones. The sulphide textures suggest diagenetic pyrite has been overprinted by hydrothermal pyrrhotite and chalcopyrite and provide strong support for the VHMS model developed for the area. A 650m long airborne electromagnetic (AEM) target, YE09, identified in a 2019 survey being tested by 21YEDD0001, may represent a massive sulphide body at greater depth than initially modelled in the 2019 survey. YE09 lies within a broader 10km long zone of AEM anomalies (YE08 to YE12) in the Johnson Cairn shales which is coincident with an 8km long magnetic anomaly. The magnetic feature, based on the sulphides intersected to date in 21YEDD0001, is now interpreted to reflect concentrations of pyrrhotite over a substantial strike length along the synclinally folded margin of the Killara Formation.