Silverco has begun a 15,000-metre exploration drilling program at its 100%-owned La Negra silver-polymetallic project in Querétaro, deploying surface and underground rigs to test high-grade targets near existing mine workings. The program supports an updated mineral resource estimate and life-of-mine plan expected later this year, alongside the planned late-2026 restart of the Cusi mine.
Centenario Gold reported surface and underground sampling results confirming a significant copper-molybdenum-gold skarn system at its Los Reyes Project, Chihuahua. High-grade copper, molybdenum, zinc and gold assays refined drill targets, with a 1,500-metre diamond drilling program scheduled to begin in early August to test the system at depth and along strike.
GR Silver reported additional strong step-out drill results from the SE Area of the San Marcial deposit, including 21.9 metres grading 168 g/t silver, with 6.15 metres at 447 g/t silver. The results confirm the continuity of silver mineralization at depth and support the company’s geological model, strengthening the potential for resource expansion ahead of an updated mineral resource estimate expected in the second half of 2026.
Questcorp and Riverside Resources completed expanded drone magnetic (248 line-km) and IP geophysical surveys at the La Union Project in Sonora while advancing Phase 2 drilling. Four holes (400 m) have been completed, with assays pending. The new geophysical data is refining drill targets and identifying additional mineralized structures for continued exploration.
Zacatecas Silver completed Phase 2 mapping and sampling at the Oso Negro Project in Sonora, collecting 391 rock-chip samples and extending mapped veins to over 3.0 km of combined strike. The program refined 20 planned drill targets, with assays pending, while ecological studies have been completed to support a SEMARNAT drilling permit application.
Riverside Resources and Questcorp Mining completed expanded drone magnetic (248 line-km) and IP geophysical surveys at the La Union Project to support ongoing Phase 2 drilling. Four drill holes totaling 400 metres have been completed with assays pending. The new geophysical data is refining existing targets and identifying additional CRD and sediment-hosted gold exploration opportunities.
Silver Tiger reported that construction of its 100%-owned El Tigre silver-gold project in Sonora remains on schedule for commissioning and first gold pour in December 2027. Key milestones include completion of long-lead equipment procurement, commencement of major earthworks and road upgrades, CFE grid power access, and new exploration drilling north of the planned mine area.
Algo Grande reported that Phase II drilling at its Adelita copper project in Sonora is progressing ahead of schedule, with the first hole completed and a second drill rig being mobilized. New UAV magnetic survey results identified three potential porphyry intrusive centers and confirmed multiple high-priority structural targets for future drilling.
J2 Metals mobilized crews for a 562-line-km UAV magnetic survey covering approximately 1,885 hectares at Sierra Plata. The survey will provide the project’s first modern geophysical coverage and, integrated with geological mapping and 3D inversion, help define structural and epithermal targets for a future maiden drill program.
EV Resources has outlined a 10–12 month pathway to production at its Tecomatlán antimony processing plant, while reporting encouraging metallurgical and drilling results from the Los Lirios project. The company is advancing permitting, third-party ore supply agreements, and Phase 2 drilling to support its strategy of becoming a near-term North American antimony producer.
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