Mining Americas Announces Key Permit Approvals for Development of the Cerro de Oro Project in Northern Zacatecas, Mexico

Toronto, Ontario--(Newsfile Corp. - September 3, 2026) - Mining Americas Inc. (TSX: MAI) (OTCQX: MAIFF) ("Mining Americas" or the "Company") is pleased to announce that the Mexican Federal Environmental Department ("SEMARNAT") has approved the key permits required for development of the Company's 100%-owned Cerro de Oro open pit, heap leach gold mine (the "Project") located in northern Zacatecas State, Mexico. Specifically, SEMARNAT has approved the land use change ("ETJ-CUS") and the environmental impact assessment ("MIA") for the Project.

Concurrent with making the payments necessary to ratify the ETJ-CUS in the near term, the Company will start planning the advancement of Cerro de Oro towards a construction decision. This includes progression of ancillary permits, licenses, and approvals required for construction and operation of the Project. Detailed engineering and mine designs will also be evaluated in the context of the current elevated gold price environment. In addition, the Company is planning for a drill program which will provide material for additional metallurgical testwork optimization studies and also test the depth extents of the deposit where mineralization is open below the current resource depth of approximately 130 metres.

Mining Americas CEO, Darren Blasutti, commented, "Receiving these key permit approvals for our Cerro do Oro project is a momentous occasion and the culmination of years' worth of diligent work by the Mexican permitting authorities, our team, and our permitting advisors. This provides a clear path for a significant increase in our gold production over the medium term. With these permits now approved, we will start planning the advancement of Cerro de Oro towards a construction decision. Cerro de Oro was shown to be a robust, open pit, heap leach gold project at a base case gold price of US$1,600 per ounce based on the 2023 PEA. We are excited to now evaluate the project in the context of significantly higher gold prices and their potential positive impacts to both the size and economics of the Project.

"With Cerro de Oro permits approved, we now have key permits in place for all our cornerstone growth projects including the construction-stage Copperstone underground gold project in Arizona and the Gold Rock open pit heap leach project adjacent to the producing Pan mine. We look forward to continuing to advance construction at Copperstone, making a construction decision for Gold Rock later this year, and progressing Cerro de Oro to a potential construction decision in 2027."

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