Orosur Mining Inc. announced that its geological teams have mobilised to Santa Cruz Province, Argentina, to commence the Company's first field exploration program at the El Pantano Gold/Silver Project ("Project"). This field program is expected to last approximately two weeks and will involve extensive mapping and surface sampling (soils and rock chip) programs over the two most attractive prospects that had been identified following examination of historical data and previous due diligence visits. The El Pantano Project is subject to an Exploration & Joint Venture ("JV") agreement ("Agreement") with private Argentinean company DESEADO DORADO S.A.S and its shareholders ("Deseado"), the details of which were announced on February 15th, 2022.

The general terms of the Agreement allow for the Company to earn 100% equity in the Project by investing USD 3 million over five years in two phases: Phase 1, earn 51% by investing USD 1 million over an initial 3-year period. Phase 2, move to 100% ownership by investing an additional USD 2 million over a subsequent 2-year period and granting Deseado a residual 2% net smelter return royalty on the Project. The Agreement covers nine contiguous licences owned by Deseado, that combined, total 607km2 in the prolific Deseado Massif region of Santa Cruz Province in southern Argentina, roughly 45km from Anglo Gold's Cerro Vanguardia mining camp.

Access to the Project is by good, paved road several hours drive south from the regional city of Comodoro Rivadavia, and then roughly 50km travel on good quality dirt roads west from the Tres Cerros Roadhouse. The region is barren and sparsely populated, largely as a result of the near complete devastation of the region's agricultural industry by ashfall from the 1991 eruption of Mt Hudson. Several large and widely spaced estancias (ranches) exist across the Project area, that will provide accommodation for field teams, eliminating the need for development of dedicated camps.

The Company has carried out extensive technical due diligence of the prospectivity of the Project, including literature searches, field visits and detailed examination of previous company work. Government provided airborne geophysical data demonstrates that the Project area is bisected by a major SE-NE trending crustal scale structure, which is the primary orientation known to control emplacement of gold and silver mineralisation across the Deseado Massif. Preliminary field inspections concentrated on this structural corridor have demonstrated positive indications that a major epithermal system exists here and as such two initial prospects have been identified and will be the subject of this initial phase of exploration.

El Pantano is well located with good access, in a flat and open environment, and therefore in general is reasonably easy to explore. However, the winter months in Patagonia (mid-May to mid-July), in addition to being very cold, are characterised by very short days, making field work logistically inefficient. In light of the imminent winter, the Company has decided to undertake a small sampling program now, such that if results are positive, sufficient time may remain for a second follow-up program before the winter break.