Heron Resources Limited announced that crushing and processing of the first underground ore from the high-grade G2 lens has commenced. The ore from the G2 lens was mined 135m below surface and was discovered during Heron's on-mine exploration drilling programs during 2017. Since the commencement of the underground campaign, approx. 10kt dmt (dry metric tonnes) of G2 stoped ore was delivered to the plant at 3.9% Zn, 1.3% Pb, 0.3% Cu, 31g/t Ag and 0.6g/t Au. This was in addition to 6kt dmt of G "hanging wall" ore at 4.7% Zn, 2.6% Pb, 0.7% Cu, 268g/t Ag, 2.0g/t Au; plus 2kt dmt of high-grade development ore at 7.3% Zn, 3.7% Pb, 4.9% Cu, 30g/t Ag and 0.9g/t Au. The tonnes and grades quoted are estimates from grade control sampling for the run of mine feed and aligned with the current Mineral Resources and Ore Reserves as reported on the ASX on 30 October 2019. The first stages of commissioning were completed utilizing tailings reclaim feed material, with some preliminary commissioning of the crushing and ball mill plant during August and September. The plant is now receiving run of mine underground ore and will complete a campaign solely on this feed source. This will facilitate the next phase of commissioning for the crusher and ball mill and marks the start of the ramp-up phase for this part of the circuit. In steady state, the plant will alternate between campaigns of tailings reclaim feed and underground ore. With stope ore now being mined and processed, paste fill activities have also been progressed, with the final commissioning of the paste plant and a number of placements underground of paste fill now complete. The forecast development includes access to the G3 (north) area that contains stopes that are in an independent sequence from the current G2, G3 (south) and GH stoping area.