Mining Americas Inc. (TSX: MAI) (OTCQX: MAIFF) has released a comprehensive progress update covering four gold projects across Arizona, Nevada, and Mexico. The company reports underground contractor mobilisation and equipment milestones at its Copperstone project in Arizona, early construction works at the fully permitted Gold Rock project in Nevada, and continued permitting advancement at its Mexican assets. Investors may be watching the company's Q4 2026 resource estimate targets as near-term catalysts for the stock.

Key Points

  • Mining Americas Inc. (TSX: MAI) (OTCQX: MAIFF) provided a multi-project growth portfolio update on November 9, 2026
  • Underground contractor Small Mine Development, LLC has been mobilised at Copperstone, with first development rounds blasted and mined
  • Mineral resource estimates for Copperstone open pit and an updated Gold Rock resource are both targeted for Q4 2026
  • Investors should watch the Q3 2026 financial report scheduled for release before market open on November 16, 2026, followed by a conference call at 11:00 AM Eastern Time

Copperstone Underground Construction Hits Key Equipment and Mining Milestones

At the Copperstone underground project in Arizona, the company reports that grinding circuit components have passed inspections and are cleared for installation. Major grinding mill rehabilitation was completed during Q3 2026, and a new variable frequency drive and motor were secured. Engineering has advanced to enable major equipment procurement packages to be awarded. Underground contractor Small Mine Development, LLC has been selected and mobilised, with first new development rounds recently blasted and mined. The company also confirmed additions to its construction management team, including a Site General Manager, Engineering Manager, and Capital and Cost Control Manager in Q3 2026.

Gold Rock Early Works Progress as 100-Ton Haul Trucks Ordered for 2027 Construction

At the fully permitted Gold Rock open pit heap leach project in Nevada, road upgrades from Pan to Gold Rock are largely complete, liner for the new heap leach pad and ponds has been ordered, and the security fence is in place. A company-owned crusher is being refurbished with completion anticipated in early 2027. The company has placed an order for 100-ton haul trucks to relocate historic heap leach pad material to the Pan mine for residual gold recovery during Gold Rock construction in 2027. An updated mineral resource estimate for Gold Rock is planned for Q4 2026, to be incorporated into the broader Pan Operating Complex.

Cerro de Oro Permitting Secured; Pre-Feasibility Study Targeted for Second Half of 2027

The Cerro de Oro project in Zacatecas, Mexico received key federal environmental permits from SEMARNAT in Q3 2026. The most recent resource estimate, completed in 2023, used a gold price of $1,700 per ounce and outlined a pit-constrained inferred resource of 67 million tonnes at 0.37 grams per tonne for 790,000 ounces of gold. An updated mineral resource estimate incorporating higher gold prices is targeted for the first half of 2027, with a pre-feasibility study planned for the second half of 2027. At the Santana project in Sonora, Mexico, new water rights have been granted and metallurgical test results are anticipated in the first half of 2027.