Interview with Marcio Fonseca, CEO of GR Silver Mining Ltd.

Our previous interview: https://www.cruxinvestor.com/posts/gr-silver-tsxvgrsl-spotting-opportunity-in-mexicos-silver-renaissance-6324

Recording date: 20th August 2025

GR Silver Mining has raised CAD $13.8 million, surpassing its original CAD $12 million target, underscoring investor confidence in the company’s dual-asset strategy that combines near-term revenue potential with significant exploration upside.

The Vancouver-based company operates two complementary projects in Sinaloa, Mexico: the historic Plomosas underground mine and the nearby San Marcial discovery, located just five kilometers apart. This proximity creates operational synergies, with Plomosas offering existing permits and infrastructure—including historic tunnels, a power line, and water rights—while San Marcial provides major exploration potential. Together, they underpin a combined resource of 134 million ounces of silver equivalent, with San Marcial’s defined resource representing only 20% of a large geophysical anomaly.

GR Silver plans to restart operations at Plomosas within 6–9 months through bulk sampling and a 250-ton-per-day pilot plant, utilizing its current permitted capacity of 600 tons per day for future expansion. This phased approach is designed to generate early cash flow while advancing toward full-scale production. Initial bulk sample results have already returned higher silver grades than expected.

Exploration efforts will focus on expanding the San Marcial resource with a 10,000–15,000 meter drilling campaign funded by the financing. The project targets wide mineralized zones—unlike Mexico’s typical narrow veins—offering lower development costs, stronger mine economics, and scalability.

CEO Marcio Fonseca, who brings over 20 years of mining experience in Mexico, highlighted the improved regulatory climate under the current government, particularly for underground operations. This environment, combined with rising silver prices and Mexico’s status as the world’s largest silver producer, positions GR Silver favorably.

Backed by two years of funding runway, strong infrastructure advantages, and multiple value catalysts, GR Silver Mining presents a compelling investment case in the silver sector, bridging short-term revenue potential with long-term resource growth.

View GR Silver Mining's company profile: https://www.cruxinvestor.com/companies/gr-silver-mining

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