Positive Drilling Results Reported From The San Dimas Silver-Gold Mine

VANCOUVER - First Majestic Silver Corp. reported on positive drilling results from its 2024 exploration program at the San Dimas Silver/Gold Mine located in Durango State, Mexico. The drill program was designed to test new silver and gold mineral targets, add Mineral Resources, and convert Mineral Resources to Mineral Reserves.

"We are very pleased with the positive exploration results that we continue to achieve at San Dimas in 2024," said, Keith Neumeyer, President & CEO. "The recent drilling has continued to highlight San Dimas' 71,867 hectare prospectivity through the intersection of significant gold and silver mineralization. Drilling to convert Inferred to Indicated Mineral Resources at Perez, Santa Regina and Elia has, in multiple cases, returned better than expected results. Resource expansion drilling has confirmed the Perez vein remains open to the east and west, the Sinaloa mineralized system is open down-dip, and the Santa Teresa mineralization is open for approximately one kilometre to the west."

Exploration drilling at San Dimas intersected significant gold and silver mineralization in multiple veins focused in the central and western regions of the property. Four areas are highlighted here: Perez, Sinaloa-Elia, Santa Regina and Santa Teresa. Drilling for the Perez vein extended gold and silver mineralization up-dip on several ore shoots, further defining a recently identified mineralized shoot to the east. Step-out drilling in the easternmost extension of the vein confirmed vein continuity. The Perez vein exploration potential remains open both to the east and west.

At the historic Sinaloa-Elia vein system located in the western portion of the property, drilling intersected several intervals of gold and silver mineralized veins. Resource conversion drilling confirms and further delineates mineralization below the historic Sinaloa vein with several intercepts returning better than expected values. Expansionary drilling below historic mining at Elia intersected two significant vein intercepts, highlighting down-dip potential.

Expansionary drilling of the Santa Teresa vein has returned significant intercepts in the eastern and western extensions of the historic mine. Early results from the western extension drilling have confirmed vein continuity and prospectivity in this direction where approximately 1 kilometre of strike length of potential remains untested.

Gold and silver drill hole intercepts were composited using the length weighted averages of uncapped sample assays, a 190 g/t AgEq minimum grade, and a minimum composite length of 0.7 m (true width). A maximum one metre below the minimum grade was allowed as internal dilution and a single sample below the minimum but above 100 g/t AgEq was allowed in the hanging or footwall to achieve minimum true width in select cases. True width of intercepts is calculated based on current understanding of drill hole and vein angle geometry.