DGO Gold Limited reported on the progress of diamond drilling at Yerrida, 75km south of Sandfire Resources' DeGrussa copper-gold mine and 60km northeast of Meekatharra, Western Australia. The maiden diamond hole (21YEDD001) was completed at a depth of 634.3m and intersected a broad interval of stratabound bands of pyrrhotite-pyrite with disseminated chalcopyrite from 295 to 334m including a 1.8m interval of semi-massive pyrrhotite-pyrite from 302.2m. DGO's exploration and detailed analysis at Yerrida has identified coincident electromagnetic, magnetic, and soil geochemistry anomalies. These coincident anomalies are within a geological sequence of the right lithology, age, and structure for hosting DeGrussa style VHMS mineralisation. RC drilling at this location identified alteration and anomalous base metals consistent with proximity to VHMS mineralisation. The diamond hole completed by DGO this week identified disseminated copper sulphide within semi-massive pyrrhotite-pyrite in the target zone. These observations suggest that the hole may have intersected the edge of a VHMS system. Follow up drilling of a diamond hole 400m to the west has now commenced. The sulphide mineralisation has been sampled and delivered to the lab and prioritised for analysis. Downhole EM and petrophysical analysis of the core will also be conducted in the near future. The diamond drilling program is currently testing target YE09 which is approximately 650m long and was originally defined in a 2019 airborne electromagnetic (AEM) survey. Following the AEM survey, soil geochemistry at Yerrida identified anomalies of the key VHMS mineralisation pathfinder elements thallium, barium and tin suggesting the presence of massive sulphides at depth. In particular, tin is a key discriminator for VHMS mineralisation. YE09 was one of 10 targets with coincident VHMS geochemical signatures and AEM anomalies. DGO's maiden RC drilling at Yerrida identified a significant east-west oriented, variably hematitic, alteration zone approximately two kilometres long and open along strike. Within this, 20YERC0004 intersected 132m at 1.3g/t silver from 56m in a broad zone of anomalous Au, As, Cu, Pb and Zn, and a significant high-grade intersection of 2m @ 9.2g/t gold from 71m in quartz veining. These results suggested the potential for VHMS mineralisation under cover at the contact of the Johnson Cairn Formation shales with the Killara Formation mafics. The Killara Formation is the stratigraphic equivalent to the Narracoota Volcanics which host Sandfire Resource's DeGrussa Cu-Au deposit. The current diamond drilling program was designed to test for VHMS mineralisation at the sediment-mafic contact within the axis of a broad synclinal trough. 21YEDD0001 was drilled 400m north of RC hole 20YERC0004 at the eastern end of target YE09. Recent reprocessing of ground EM results over YE09 has identified two east-northeast trending conductors. 21YEDD0001 intersected the edge of one of these conductors. 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 observed sulphide textures suggest hydrothermal pyrrhotite and chalcopyrite has overprinted pre-existing pyrite. The prevalence of pyrrhotite indicates that the mineralising fluids were hot (>300-350oC) and reducing suggesting favourable conditions for forming significant copper and gold mineralisation. The sulphide intersections support a VHMS model developed for Yerrida. The predominance of magnetic pyrrhotite in 21YEDD0001 suggests the magnetic anomaly coincident with YE09 is reflecting concentrations of pyrrhotite. This indicates that the strongly coincident VHMS geochemical signatures, AEM anomalies, and magnetic anomalies at targets YE09 and YE11 are defining the centre of the massive sulphide bodies. Future drilling will target the deeper magnetic highs extending for over seven kilometres between YE09 and YE11 within the Johnson Cairn shales on the margin of the Killara Formation volcanics.