Name of the Mine
Cerro Negro mine.

Location
Cerro Negro is located in Santa Cruz province, southern Argentina, about 400 km south-west of Comodoro Rivadavia and about a two-hour drive south of Perito Moreno. Comodoro Rivadavia is the closest commercial airport, with connections to Buenos Aires. The operation lies at an elevation of about 600 m above sea level on the low Patagonian plains.

Mine Owner/s
Cerro Negro is 100%-owned and operated by Newmont Corporation.

Brief Description
Cerro Negro is a high-grade underground gold/silver mine and vein complex. Current mine areas are centred on Eureka, Mariana Central, Mariana Norte and Emilia, with San Marcos and further deposits supporting the mine-life extension pipeline. 

Newmont’s 2025 Annual Report also identifies Bajo Negro and Silica Cap as underground mines/deposits in development.

The broader complex includes additional deposits and exploration targets, including the Vein Zone openpit target. 
Ore is treated through a cyanide-leach processing plant with Merrill Crowe recovery to produce gold and silver doré.

In 2022, Cerro Negro became Argentina’s first underground mine to use an automated load-haul-dump vehicle controlled and supervised from surface, improving safety, operator comfort and efficiency.

Brief History
Cerro Negro’s first production was recorded in 1910. The asset became part of Newmont’s portfolio following Newmont’s acquisition of Goldcorp, which closed in April 2019.

Cerro Negro has since continued as one of Newmont’s Argentine operations and is in a mature production phase. Newmont has been investing in underground development and district-scale growth opportunities, including the Marianas and Eastern districts. 

Primary Metals/Minerals
Gold.

Secondary Metals/Minerals
Silver.

Geology/Mineralisation
Cerro Negro comprises low-sulphidation, epithermal gold/silver vein deposits. Mineralisation occurs in a district-scale vein system with multiple deposits and exploration targets, including Eureka, Mariana Central, Mariana Norte, Emilia, San Marcos, Baja Negro, Silica Cap and the Vein Zone area.

Reserves
As at December 31, 2025, Cerro Negro had attributable proven and probable reserves of nine-million tonnes grading 10.58 g/t gold and 70.62 g/t silver

Resources
As at December 31, 2025, Cerro Negro had attributable measured and indicated gold resources, exclusive of reserves, of 3.2-million tonnes grading 4.73 g/t gold. Inferred gold resources were 7.5-million tonnes grading 5.1 g/t gold.

The mine also had attributable measured and indicated silver resources, exclusive of reserves, of 3.2-million tonnes grading 19.88 g/t silver. Inferred silver resources were 7.5-million tonnes grading 27.4 g/t silver.

Type of Mine
Underground mine.

Mining Method
Cerro Negro is a mechanised underground mining operation. 

The underground mining fleet comprises underground loaders and haul trucks and surface haul trucks, as well as auxiliary equipment. Cerro Negro also uses automated underground loading technology controlled and supervised from surface.

Major Infrastructure/Equipment
Cerro Negro’s major infrastructure includes underground mining areas, mine development infrastructure, haulage and loading equipment, and a processing plant.

The processing plant comprises crushing, grinding, agitated leaching, counter-current decantation, solution clarification, Merrill-Crowe zinc precipitation and smelting circuits. The plant produces gold and silver doré bars, which are shipped to a refinery for further processing.

Prospects
Cerro Negro remains a focus area for mine-life extension and near-mine exploration. 
Newmont’s Cerro Negro District Expansion 1 project involves the simultaneous development of the Marianas and Eastern districts, to add about 3.5-million ounces of gold and extending the mine life beyond 2038. 

Contact Details
Newmont Cerro Negro – Santa Cruz
Tel +54 2963 432464
Email globalcommunications@newmont.com / investor.relations@newmont.com
Website https://www.newmont.com/