Alto Metals Limited provided an update on its exploration activity and forward plans for the Havilah Prospect at its Sandstone Gold Project in Western Australia. Compilation and review of previous explorer's data has confirmed the high- grade gold mineralisation at the historic Havilah gold mine is hosted within a differentiated dolerite unit similar to Alto's Vanguard deposit and that significant potential exists for extension of mineralisation at depth and along strike. The Havilah deposit is located within the high priority ‘Alpha Domain’, supporting Alto's view that the domain has potential to host a substantial gold deposit. Compilation and review of previous explorers' data by Alto has confirmed that high-grade mineralization at the Havilah Prospect occurs within differentiated mafic volcanic host rocks similar to Alto's Vanguard deposit 6km to the northwest and both within Alto's priority 1 ‘Alpha Domain.’ The recorded production from the Havilah Mine area between 1904 - 1929 48,497 tonnes @ 21.6g/t Au for 33,870oz with the majority of this during the period 1907 - 1911. The historic miners largely stoped out a high-grade ‘footwall’ zone, and left intact a lower grade ‘hanging wall’ zone of mineralisation which was subsequently drilled by modern explorers. Drilling Between 1980 and 2009 a total of 210 drill holes for 7,240m were drilled at Havilah by previous explorers. Drilling methods included rotary air blast (RAB), air-core (AC), reverse circulation (RC) and diamond drill core (DC) with the majority of drilling (79%) being RC and DC. Maximum drill hole depth was 123m with an average maximum depth of only 34m. Alto has captured and digitised the existing drilling data and detailed historic underground workings and produced a 3D model of the geology, mineralisation and underground workings. The surface location of drill collars was validated by Alto's aerial drone imagery. The model has assisted with interpretation of the mineralisation, the targeting of future drilling and will enable Alto to account for the `mined out' areas in the JORC (2012) mineral resource estimate which is planned for later in January. Detailed geological mapping by Homestake Australia Limited (Homestake) and interpretation of drilling data by Homestake and other explorers has shown the Havilah Mine area to be underlain by a WNW striking dolerite unit termed the Havilah Dolerite, bounded to the northeast by pillowed and amygdaloidal basalt, and to the southwest by ultramafic rocks. Within the mineralised portion of the Havilah Dolerite, drilling has intersected dolerites and basalts of similar mineralogy, suggesting the Havilah Dolerite is a differentiated mafic unit. Granophyric quartz dolerite has also been identified in historic mullock dumps. Based on petrology of thin sections of diamond drill core, previous explorers reported a similarity between the Havilah Dolerite and the lower units of the Golden Mile Dolerite. Mineralisation is confined to the Havilah Dolerite close to the dolerite/basalt contact and consists of quartz veins and stockworks within a flat-dipping, northwest striking mineralised shoot with a plunge of approximately 20 degrees to the northwest. Quartz-carbonate veins up to 0.5m wide have been intersected in drill core with recognisable selvedges to the mineralisation up to 10m in width. Sulphides occur both in the veins and the adjacent wall rocks and consist of dominant pyrite and arsenopyrite with minor pyrrhotite and trace chalcopyrite. The mineralised zones are surrounded by a chlorite alteration envelope approximately 1km wide and at least 6km long. Carbonate alteration is intimately associated with the mineralisation both in stockwork and shear-controlled zones. The geology and mineralisation at Havilah is similar to Alto's Vanguard deposit 6km along strike to the northwest (0.8Mt at 1.8g/t Au for 50,000oz). The company has commissioned Dr. Spero Carras of Carras Mining Pty Ltd. to prepare a JORC (2012) Mineral Resource Estimate for the Havilah deposit. This should be completed close to end of January 2019. Further RC drilling is planned to test the down-dip/down-plunge extensions to the mineralisation and potentially expand the mineralised area.