La Union Project

Riverside’s initial field work in September 2021 included selective rock sampling from abandoned mine workings and dumps with results returning up to 59.4 g/t Au and 833 g/t Ag (see Table 2). Further exploration work will begin shortly as the Company has completed its review.

La Union Polymetallic Project was previously defined as a manto-chimney style deposit that could potentially be linked to a porphyry-skarn system further at depth. The ongoing work has been demonstrating significantly high-grades in gold, silver, lead and zinc across mineralized areas. Near surface, the oxide gossan cap and carbonate replacement bodies are particularly extensive with strong similarities with the Leadville polymetallic system in Colorado, USA. At La Union the Paleozoic carbonate stratigraphic section is a composite of over 1,000 m thick regionally and the mineralization of chimneys and mantos is unexplored.

After completing a claim consolidation in September, Riverside conducted a follow up field mapping and sampling program of 103 samples with the best sample returning 83.2 g/t (2.6 oz/t) gold and 4,816 g/t (150 oz/t) silver. The work further enhanced Riverside’s understanding of the structural and lithological context by linking the small historical workings into a larger regional context. Although the Project is still in its initial stages, mineralization appears to be of manto-chimney and replacement type within Pre-Cambrian to Cambrian sedimentary rocks (see Figure 3 in Diagrams).

Following-up on this high-grade discovery Riverside’s team returned and was able to define the extent of the mineralization. The highlights of this latest work defined high grade polymetallic samples up to 30% Zn, 83.2 g/t Au, 4,816 g/t Ag, 10.3% Pb (see Table 1). Of the 103 samples assay value ranged from 83.3 g/t gold to non-detectable with about 30% of the samples returning significant values in gold, silver, lead and/or zinc the best being.

• Au – high: 83.2 g/t; low cut-off: 0.5 g/t
• Ag – high: 4,816 g/t; low cut-off: 300 g/t
• Pb – high: 10.3%; low cut-off: 0.1%
• Zn – high: 30%*; low cut-off: 0.1%

*30% Zn is the upper detection limit in analysis method performed

Table 1: Assays from La Union Polymetallic Project. Results from November 2021 program

Note: Best 13 assays from 103 samples collected.

Table 2: Sample Results from La Union Polymetallic Project (October 2021).

Note: Six of the higher-grade due diligence samples out of eight total are shown in Table 2.