Siren Gold Limited Annual Report 2020

Mapping and Sampling (continued) The 1942 map by Gage shows the Prima Donna reef approximately ~200m east of Big River mine (Figure 10). The Prima Donna was reported as a” large lode carrying some gold and encouraged the company to commence forming track to the outcrop with the view of prospecting it at depth, but this has been discontinued”. The A2, Big River Mine and the Prima Donna combined cover a strike of around 500m which is overlaid by anomalous gold and arsenic soil geochemistry (Figure 11). Mapping to the south of the Big River mine has confirmed that a large broad anticline extends 3kms from St George to the Big River mine and is open to the north and south (Figure 9). This anticline is largely obscured by thin glacial till but there is sufficient basement outcrop in creek beds to map this structure. The main reef track that runs through St George and Big River South mines is parallel and 250m to the west of the anticline and appears to link into the Big River mine. These structures are a prime targets area for Big River mine style mineralisation. The glacial till overlying these structures has been sampled using the new Ultrafine soils technique as part of a trial with the Commonwealth Scientific and Industrial Research Organisation (CSIRO) to see if this technique can detect gold mineralisation beneath this cover. Results from this Ultrafine sampling technique are due in April. Operations Review Figure 9. Recent mapping from the Big River south area with existing gold soil sampling results. for the year ended 31 December 2020 Annual Report 2020 11