Exploration Drilling Underway at Silver Dollar's La Joya Silver (Copper-Gold) Project

About this update from Silver Dollar Resources, Inc.

The fully funded, 3,500-metre drilling program will test for deep San Martin-type mineralization Vancouver, British Columbia--(Newsfile Corp. - April 20, 2026) - Silver Dollar Resources Inc. (CSE: SLV) (OTCQX: SLVDF) (FSE: 4YW) ("Silver Dollar" or the "Company") is pleased to announce that diamond drilling has commenced at its 100%-owned La Joya Silver (Cu-Au) Project, located in the state of Durango, in the southeastern portion of the prolific Mexican Silver Belt. Photo 1: Anchoring the Versa drill rig on the first hole of the 2026 drilling campaign at La Joya. The 3,500-metre drilling program will test targets outside the historic resource areas, focusing on the Noria portion of the 2-by-3-kilometre (km) La Joya mineralized complex. The primary target areas display similarities with the mineralization style at the nearby San Martin mine, located approximately 25 km southeast of La Joya (Figure 1). Figure 1: La Joya Project location, along with past producing and operating mines in the area. Silver Dollar's discovery of San Martin-type mineralization at La Joya, specifically at the Coloradito Intrusive, "El Brazo", provides evidence supporting the concept of deeper mineralization around the main intrusions (Figure 2). Both La Joya and San Martin are situated within the Cuesta del Cura Limestone Formation and the overlying Indidura Formation, along the broadly defined San Luis-Tepehuanes Fault System, commonly referred to as the Mexican Silver Belt. These intrusions are of the same age, similar in size and composition, and in both cases, mineralization is concentrated along the contact near the outer limit of skarn alteration surrounding the intrusion. Historically, the San Martin mine reportedly contained more than 300 million ounces of silver, with mineralization extending vertically for more than 850 meters (m). Drilling has indicated that mineralization remains open for an additional 400 m below known intercepts, suggesting depths well beyond 1,200 m (approximately 4,000 feet). This makes San Martin an ideal exploration model for targeting deeper mineralization at La Joya. Several targets have been developed at La Joya to drill-test for deep San Martin-type mineralization below known mineralization or magnetic anomalies near the margins of the intrusive bodies. These targets include: Central Dyke: Delineated over a strike length of 770 m with 134 of 1...

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