Amerigo’s MVC Resumes Fresh Tailings Processing
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August 13, 2025
N.R. 2025-12
Amerigo’s MVC Resumes Fresh Tailings Processing
• El Teniente restarts operations and is sending fresh tailings to MVC
• Historic tailings processing remains ongoing
• Timing of normalized operations at El Teniente to determine impact on MVC guidance
VANCOUVER, BRITISH COLUMBIA – August 13, 2025 / Amerigo Resources Ltd. (TSX: ARG; OTCQX: ARREF)
(“Amerigo” or the “Company”) provides an operational update on Minera Valle Central (“MVC”), its 100%
owned operation located near Rancagua, Chile.
On Saturday, August 9, 2025, the El Teniente underground copper mine received approval from Chile’s National
Geology and Mining Service and the Labour Directorate to restart operations in eight of the twelve underground
sectors. Four sectors remain tempora rily shut down. Operations at El Teniente have resumed in accordance
with a safety restart plan. Following the restart of operations at El Teniente, MVC started receiving fresh tailings
during the night of Sunday, August 10, 2025.
As reported in the Company’s news release of August 6 , 2025, operations at the El Teniente underground
copper mine, owned by Corporación Nacional del Cobre de Chile (“Codelco”), were suspended on the evening
of July 31, 2025. This followed a seismic event that, unfortunately, resulted in the death of six workers. While
operations at the mine and the supply of fresh tailings to MVC were suspended, Amerigo continued to process
historic tailings.
MVC is now processing fresh tailings from El Teniente and also handling historic tailings. Until operations at El
Teniente are normalized, Amerigo expects daily throughput from the fresh tailings to be lower than initially
forecast in MVC’s 2025 production schedule.
“To the extent possible, MVC will mitigate any production impacts by increasing the processing of historic
tailings,” said Aurora Davidson, Amerigo’s President and CEO. “Once we have data on El Teniente’s throughput
over the next few days, we will provide a production update,” she added.
About Amerigo and Minera Valle Central
Amerigo Resources Ltd. is an innovative copper producer with a long -term relationship with Co delco, the
world’s largest copper producer.
Amerigo produces copper concentrate, and molybdenum concentrate as a by -product at the MVC operation
in Chile by processing fresh and historic tailings from Codelco’s El Teniente mine, the world's largest
underground copper mine. Tel: (604) 681-2802; Web: www.amerigoresources.com; ARG:TSX; OTCQX: ARREF.
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Contact Information
Aurora Davidson Graham Farrell
President and CEO Investor Relations
(604) 697-6207 (416) 842-9003
[email protected] [email protected]
Cautionary Statement Regarding Forward-Looking Information
This news release contains certain “forward -looking information” as such term is defined under applicable
securities laws (collectively called "forward-looking statements"). This information relates to future events or
the Company’s future performance. All statements other than statements of historical fact are forward-looking
statements. The use of any of the words "anticipate", "plan", "continue", "estimate", "expect", "may", "will",
"project", "predict", "potential", "should", "believe" and similar expre ssions are intended to identify forward -
looking statements. These forward -looking statements include the statement concerning the Company’s
planned mitigation of production impacts at El Teniente by increasing the processing of historic tailings.
These forward-looking statements involve known and unknown risks, uncertainties and other factors that may
cause actual results or events to differ materially from those anticipated in such statements. Inherent in
forward-looking statements are risks and uncertainties beyond our ability to predict or control, including risks
that may affect our operating or capital plans; risks generally encountered in the operation, permitting and
development of mineral projects such as unusual or unexpected geological for mations, negotiations with
government and other third parties, unanticipated metallurgical difficulties, delays associated with permits,
approvals and permit appeals, ground control problems, adverse weather conditions (including, but not
limited, to heavy rains), process upsets and equipment malfunctions; risks associated with labour
disturbances and availability of skilled labour and management; risks related to the potential impact of global
or national health concerns; government or regulatory actions o r inactions, including, but not limited to, the
imposition of tariffs on the importation of copper; fluctuations in the market prices of our principal
commodities, which are cyclical and subject to substantial price fluctuations; risks created through
competition for mining projects and properties; risks associated with lack of access to markets; risks
associated with availability of and our ability to obtain both tailings from Codelco’s Division El Teniente (“DET”)
current production and historic tailings from tailings deposit; the availability of and ability of the Company to
obtain adequate funding on reasonable terms for expansions and acquisitions; mine plan estimates; risks
posed by fluctuations in exchange rates and interest rates, as well as general economic conditions; risks
associated with environmental compliance and changes in environmental legislation and regulation; risks
associated with our dependence on third parties for the provision of critical services; risks associated with non-
performance by contractual counterparties; risks associated with supply chain disruptions; title risks; social
and political risks associated with operations in foreign countries; risks of changes in laws affecting our
operations or their interpretation, including fo reign exchange controls; and risks associated with tax
reassessments and legal proceedings. Many of these risks and uncertainties apply to the Company and its
operations, as well as DET and its operations. DET’s ongoing mining operations provide a significant portion of
the materials the Company processes and its resulting metals production. Therefore, these risks and
uncertainties may also affect the Company's operations and have a material effect.
Actual results and developments will likely differ materially from those expressed or implied by the forward -
looking statements in this news release. Such statements are based on several assumptions which may prove
to be incorrect, including, but not limited to, assumptions about the El Teniente mine resuming operations in
the near future and the resumption without significant delay of ongoing supply of material for processing from
DET’s current mining operations.
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Future production levels and cost estimates assume no additional adverse mining or other events significantly
affecting budgeted production levels.
Climate change is a global issue that could pose significant challenges affecting the Company's future
operations. This could include more frequent and intense droughts followed by intense rainfall. In the last
several years, Central Chile has experienced both drought conditions and significant rain episodes. The
Company’s operations are sensitive to water availability and the reserves required to process projected historic
tailings tonnage.
Although the Company believes that these assumptions were reasonable when made, because these
assumptions are inherently subject to significant uncertainties and contingencies which are difficult or
impossible to predict and are beyond the Company’s contro l, the Company cannot assure that it will achieve
or accomplish the expectations, beliefs or projections described in the forward-looking statements.
The preceding list of important factors and assumptions is not exhaustive. Other events or circumstances
could cause our results to differ materially from those estimated, projected, and expressed in or implied by our
forward-looking statements. You should also consider the matters discussed under Risk Factors in the
Company’s Annual Information Form. The forward -looking statements contained herein speak only as of the
date of this news release.