Goldsource Mines Inc. announced the filing of a Technical Report which includes an updated Mineral Resource Estimate prepared in accordance with NI 43-101 for the Company's Eagle Mountain Gold Project. The Report is titled "Mineral Resource Estimate for the Eagle Mountain Gold Project, Potaro - Siparuni Region Guyana, NI 43-101 Technical Report", dated May 24, 2022, with an Effective Date of April 5, 2022. The summary results of the Report were previously announced in the Company's news release dated April 7, 2022.

There are no material differences in mineral resources between the Report and that news release. Estimated 31.1 million tonnes grading 1.18 grams per tonne gold for 1,183,000 ounces of gold in Indicated Resource and 18.4 Mt grading 0.98 gpt gold for 582,000 oz of gold in Inferred Resource. The MRE includes the Eagle Mountain and Salbora deposits as well as the earlier-stage Toucan and Powis prospects.

Gold mineralization starts at surface in saprolite (soft weathered rock) and extends into the underlying fresh rock. Overall, the saprolite and transition contain 35% of the gold in Indicated Resource and 24% in Inferred Resource. The Indicated Resources, representing 67% of the gold in the updated MRE, are laterally extensive and generally shallow.

At the Eagle Mountain deposit, the Indicated Resource extends from surface to a maximum depth of 150 metres and has an average depth of 35 metres. 75% of the Indicated Resource is within 50 metres of surface. At the Salbora deposit, the Indicated Resource extends from surface to a maximum depth of 156 metres and has an average depth of 49 metres.

58% of the Indicated Resource is within 50 metres of the surface. The Mineral Resource estimate uses cut-off grades of 0.30 gpt gold for the saprolite and 0.50 gpt gold for the fresh rock, constrained grade boundaries based on geology, and are pit-contained (conceptual). The MRE Update is defined by 772 core holes for 75,430 metres drilled (average depth of 98 metres) up to December 31, 2021, the assay cut-off date.