MSA Drilling Confirms Linked High-grade Polymetallic Breccias - Porphyry Cu-Mo-Au-Ag Centre: Drills 186 m of 0.48% Copper, 0.18 g/t Gold and 10.1 g/t Silver to End of Hole

Minsud Resources Corp. (MSR) released initial assay results on November 10, 2026, from the first hole of a 10,500-meter diamond drilling program at its Chita Valley project in Argentina. The initial hole, designated CHDH26-174, intersected 696 meters of continuous sulphide mineralization, revealing three distinct systems: an upper high-sulphidation (HS) copper-gold-silver zone, an intermediate-sulphidation (IS) zinc-lead-silver zone, and a deep high-grade magmatic-hydrothermal breccia zone.

A significant 186-meter intercept at the bottom of the hole grades 0.48% copper, 0.18 g/t gold, and 10.1 g/t silver to the end of the hole. Molybdenum concentrations rise 50-fold in the final 100 meters, with geochemistry indicating an underlying porphyry copper-molybdenum system beneath the epithermal zone. Mineralization remains open at depth, and the geological model now supports a stacked porphyry-epithermal district-scale system.

Minsud Resources Corp. (MSR) reported drill results on November 10 that validate its exploration thesis and fundamentally expand the geological model of the Chita Valley project. The findings confirm a deep porphyry system with significant molybdenum enrichment beneath existing high-grade breccias, adding a high-value byproduct credit to the company's resource base.

The results follow the August 13 announcement of a 10,500-meter drilling program and build upon the February 27 mineral resource estimate update, demonstrating that the program is successfully targeting resource growth and new discoveries as planned. The discovery of a porphyry system typically commands a valuation premium in the exploration sector, as it suggests larger, lower-grade tonnage potential alongside existing high-grade zones. This development materially upgrades the project's long-term potential for an exploration-stage company without requiring immediate capital expenditure or production timelines.

Minsud Resources Corp. (MSR) is a pre-revenue exploration company focused on the Chita Valley project in the San Juan Province of Argentina. The project is operated by a joint venture, Minera Sud Argentina S.A. (MSA), with South32 holding a 50.1% interest and Minsud holding a 49.9% interest. The company’s flagship assets are the Chinchillones polymetallic sulphide deposit and the Chita South Porphyry (PSU) deposit.

As an exploration-stage entity with no producing assets or revenue, Minsud relies on equity financings and its joint venture partner to fund operations. The project benefits from excellent infrastructure in the San Juan region and a favorable mining jurisdiction, though it remains subject to Argentine economic and regulatory conditions.