Announcement • May 14
Orosur Mining Inc Reports Positive Drilling Results At Pepas West
Orosur Mining Inc. announced an update on the progress of exploration activities at the Company's exploration project at Anzá in Colombia. Ongoing drilling at Pepas West continues to show positive results: PEP085, 16.1m @ 2.68g/t Au; PEP087, 21.7m @ 1.42g/t Au; PEP088, 9.8m @ 1.41g/t Au; PEP090, 23.45m @ 2.98g/t Au. Hole PEP090 stepped out 30m north of previous holes, demonstrating extension potential. Rig currently drilling south of Pepas, will return to Pepas West in several weeks. Hole MAP-106 at APTA now in the target zone. The Anzá Project in Colombia comprises a number of granted exploration titles and applications totalling roughly 330km2, within the Mid-Cauca gold belt, west of the city of Medellín. These titles and applications are owned by two Colombian companies, Minera Anzá, and Minera Monte Aguila, both wholly owned subsidiaries of the Company. The latter of these was acquired by Orosur in November 2024 from the Company's previous JV partners, Newmont Mining and Agnico Eagle Mines. Orosur thus owns 100% of the Anzá Project. Since acquiring 100% control, the Company has focussed its attention on three prospects: Pepas - a shallow, high-grade ore body of gold mineralisation for which the Company has calculated a Mineral Resource Estimate, announced February 10th 2026; APTA - a high-grade body of gold mineralisation that has to date seen almost 39,000m of historical drilling, and at which drilling has recently recommenced; El Cedro - a cluster of gold porphyry intrusions in the south of the Project area that are currently subject to mapping and sampling programs, with a view to potentially being drilled as soon as targets can be finalised and logistics arranged. The Company's primary focus since reassuming control of the Project in late 2024, was to explore the immediate area of Pepas, ultimately leading to the publication of a maiden Mineral Resource Estimate for the Pepas gold deposit on February 10th, 2026. This Mineral Resource Estimate was based upon drilling undertaken by the Company and its previous JV partner from 2022 to late 2025. Results from the final hole included in the Mineral Resource Estimate, PEP074, were announced on January 8th, 2026. Following completion of the Mineral Resource Estimate drillout in late 2025, the Company then embarked on a semi-regional drilling program around the Pepas deposit. The objective of this drilling program was to better understand the larger scale litho-structural controls that led to formation of the Pepas deposit, such that, in combination with additional mapping and sampling in the wider region, vectors toward additional mineralisation might be developed. As announced on April 14th, 2026, a new zone of mineralisation, geologically similar to Pepas, has been discovered approximately 100m west of the main Pepas zone. This zone had been first identified in two drill holes from early 2025, but only returned to in early 2026 once the Pepas Mineral Resource Estimate had been completed. A number of holes (PEP082 to PEP090) have now been completed into this zone, from various positions and in various directions, in order to gain some understanding of the nature, orientation and controls upon this zone. Results thus far are highly encouraging with thick intersections of shallow gold mineralisation being recorded. Particularly encouraging was PEP090, drilled some 30m NW of previous holes, demonstrating mineralisation over 100m in strike with untested strike extension. Hole Number From (m) To (m) Interval (m) Au (g/t) PEP084 06.9 56.9 50.98 8.5 10.8 2.3 0.48 PEP085 03.7 3.7 0.63 14.95 31.05 16.1 2.68 including 20.9 26.25 5.35 4.18 PEP086 09.8 9.8 0.96 including 04.3 4.3 1.83 PEP087 9.4 31.1 21.7 1.42 including 19.05 27.8 8.75 2.28 PEP088 4.9 14.7 9.8 1.41 PEP089 6.9 11.15 4.25 0.38 PEP090 9.6 14.15 4.55 0.46 17.95 41.42 23.45 2.98 including 29.9 37.3 7.4 7.23 64.1 69.9 5.8 1.94 including 67.6 69.9 2.3 3.19. As previously announced, after completion of hole PEP090, the rig operating at Pepas has been moved southward to other targets, to allow time for geological and assay information from Pepas West to be compiled. This is an ongoing process; however, the Company's geological team note that Pepas West is worthy of follow-up and it is planned that the rig will return here in several weeks to begin to define the size of this mineralised zone. The APTA prospect in the centre of the Project area has seen almost 39,000m of drilling by various companies since 2012. This work has identified a substantial epithermal gold system. The last phase of drilling was undertaken by the Company's previous JV partner, MMA, from late 2020 through early 2022, at which time the abatement of Covid related operational restrictions allowed MMA field crews to begin to explore the wider Anzá project area. Results from the final holes of this phase of work were announced on 27th June 2022. A new phase of drilling was commenced some weeks ago, with hole MAP-106 planned to assess several new geological concepts to assist in planning a larger drill campaign that may, if successful, allow APTA to move to resource status. Progress of MAP-106 has been very slow due to several zones of difficult and broken ground. However, the hole is now well past 300m and within the target zone. Going forwards, new drill pads are being developed in different locations such that these issues are not repeated.
