Saturday, September 26, 2026
MiningNewsTerminal
Saturday, September 26, 2026 Admin

LUN.TO ·

Lundin Mining Provides Update on Ojos del Salado Operations in Chile

Corporate Updates

Corporate Office

150 King Street West, Suite 2200

P.O. Box 38, Toronto, ON M5H 1J9

Phone: +1 416 342 5560

Fax: +1 416 348 0303

lundinmining.com

NEWS RELEASE

Lundin Mining Provides Update on Ojos del Salado Operations in Chile

Toronto, August 9, 2022 (TSX: LUN; Nasdaq Stockholm: LUMI) Lundin Mining Corporation (“Lundin Mining” or

the “Company”) continues to investigate the cause of a sinkhole that was detected near the Alcaparrosa mine of its

Minera Ojos del Salado operations in Chile on July 30 and is cooperating fully with Chilean regulatory authorities in

relation to the incident.

All personnel at the operation and in the community are safe and the appearance of the sinkhole did not result in

any injuries. As a precautionary measure, development work in an area of the Alcaparrosa underground mine was

halted immediately upon detection of the s inkhole, and subsequently all mining operations suspended at

Alcaparrosa. On August 4, Chile’s National Service of Geology and Mining (Sernageomin) issued a notification to

maintain suspension of all mining activities in Alcaparrosa.

“Our actions in respo nding to this incident are guided first and foremost by the safety of personnel and community

members,” said Peter Rockandel, President and CEO of Lundin Mining. “We are fully committed to working cooperatively

with an independent investigation by Sernageomin, in addition to conducting our own investigation, and to communicating

regularly with community members, union representatives and other stakeholders to ensure they are informed of

developments.”

Contrary to some media reports, the size of the sinkhole has not changed materially since detection. On July 30, the

sinkhole measured approximately 32 meters in diameter at the surface, 48 meters in diameter at the bottom and

64 meters deep. The sinkhole is being continuously monitored and as of August 9, the diameter at the surface has

increased slightly to 36.5 meters, while the bottom diameter has remained stable at 48 meters and the depth has

decreased to 62 meters.

Further information will be provided as events warrant, including following the outcome of investigations into the

cause of the sinkhole.

About Lundin Mining

Lundin Mining is a diversified Canadian base metals mining company with operations and projects in Argentina,

Brazil, Chile, Portugal, Sweden and the United States of America, primarily producing copper, zinc, gold and nickel.

The information in this release is subject to the disclosure requirements of Lundin Mining under the EU Market

Abuse Regulation. The information was submitted for publication, through the agency of the contact persons set

out below on August 9, 2022 at 17:15 Eastern Time.

For further information, please contact:

Mark Turner, Vice President, Business Valuations and Investor Relations: +1 416 342 5565

Irina Kuznetsova, Manager, Investor Relations: +1 416 342 5583

Robert Eriksson, Investor Relations Sweden: +46 8 440 54 50

Cautionary Statement on Forward-Looking Information

Certain of the statements made and information contained herein is “forward-looking information” within the meaning of applicable Canadian securities laws. All

statements other than statements of historical facts included in this document constitute forward -looking information, including but not limited to statements regarding

the Company’s plans, prospects and business strategies; the Company’s guidance on the timing and amount of future production and its exp ectations regarding the

results of operations; expected costs; permitting requirements and timelines; timing and possible outcome o f pending litigation; the results of any Preliminary Economic

Assessment, Feasibility Study, or Mineral Resource and Mineral Reserve estimations, life of mine estimates, and mine and mine closure plans; anticipated market prices

of metals, currency exchange rates, and interest rates; the development and implementation of the Company’s Responsible Mining Management System; the Co mpany’s

ability to comply with contractual and permitting or other regulatory requirements; anticipated exploration and development activities at the Company’s projects; the

Company’s integration of acquisitions and any anticipated benefits thereof; and expectations for other economic, business, an d/or competitive factors. Words such as

“believe”, “expect”, “anticipate”, “contemplate”, “target”, “plan”, “goal”, “aim”, “intend”, “continue”, “budget”, “estimate”, “may”, “will”, “can”, “could”, “should”, “sche dule”

and similar expressions identify forward-looking statements.

Forward-looking information is necessarily based upon various estimates and assumptions including, without limitation, the expectations and beliefs of management,

including that the Company can access financing, appropriate equipment and sufficient labor; assumed and future price of copp er, nickel, zinc, gold and other metals;

anticipated costs; ability to achieve goals; the prompt and effective integration of acquisitions; that the political environ ment in which the Company operates will

continue to support the development and operation of mining projects; and assumptions related to the factors set forth below. While these factors and assumptions are

considered reasonable by Lundin Mining as at the date of this document in light of management’s experience and perception of current conditions and expected

developments, these statements are inherently subject to significant business, economic and competitive uncertainties and contingencies. Kn own and unknown factors

could cause actual results to differ materially from those projected in the forward-looking statements and undue reliance should not be placed on such statements and

information. Such factors include, but are not limited to: risks inherent in mining including but not limited to risks to the environment, industrial accidents, catastrophic

equipment failures, unusual or unexpected geological formations or unstable ground conditions, and natural phenomena such as earthquakes, flooding o r unusually

severe weather; uninsurable risks; global financial conditions and inflation; changes in the Company’s share price, and volatility in the equity markets in general;

volatility and fluctuations in metal and commodity demand and prices; changing taxation regimes; delays or the inability to o btain, retain or comply with permits;

reliance on a single asset; unavailable or inaccessible infrastructure, infrastructure failures, and risks related to ageing infrastructure; risks related to negative publi city

with respect to the Company or the mining industry in general; health and safety risks; pricing and availability of key suppl ies and services; the threat associated with

outbreaks of viruses and infectious diseases, including the COVID-19 virus; exchange rate fluctuations; risks relating to attracting and retaining of highly skilled

employees; risks inherent in and/or associated with operating in foreign countries and emerging markets; climate change; regulatory investigations, enforcement,

sanctions and/or related or other litigation; existence of significant shareholders; uncertain political and economic environ ments, including in Argentina, Brazil and

Chile; risks associated with acquisitions and related integration efforts, including the ability to achieve anticipated benef its, unanticipated difficulties or expenditures

relating to integration and diversion of management time on integration; indebtedness; liquidity risks and limited financial resources; funding requirements and

availability of financing; exploration, development or mining results not being consistent with the Company’s expectations; r isks related to the environmental regulation

and environmental impact of the Company’s operations and products and management thereof; activist shareholders and proxy sol icitation matters; reliance on key

personnel and reporting and oversight systems, as well as third parties and consultants in foreign jurisdictions; historical environmental liabilities and ongoing

reclamation obligations; information technology and cybersecurity risks; risks related to mine closure activities, reclamatio n obligations, and closed and historical sites;

social and political unrest, including civil disruption in Chile; the inability to effectively compete in the industry; finan cial projections, including estimates of future

expenditures and cash costs, and estimates of future production may be unreliable; actual ore mined and/or metal recoveries varying from Mineral Resource and

Mineral Reserve estimates, estimates of grade, tonnage, dilution, mine plans and metallurgical and other characteristics; ore processing efficiency; risks associated with

the estimation of Mineral Resources and Mineral Reserves and the geology, grade and continuity of mineral deposits including but not l imited to models relating thereto;

enforcing legal rights in foreign jurisdictions; community and stakeholder opposition; changes i n laws, regulations or policies including but not limited to those related to

mining regimes, permitting and approvals, environmental and tailings management, labor, trade relations, and transportation; risks associated with the structural

stability of waste rock dumps or tailings storage facilities; dilution; risks relating to dividends; conflicts of interest; counterparty and credit risks and customer

concentration; the estimation of asset carrying values; challenges or defects in title; internal controls; relationships with employees and contractors, and the potential

for and effects of labor disputes or other unanticipated difficulties with or shortages of labor or interruptions in producti on; compliance with foreign laws; potential for

the allegation of fraud and corruption involving the Company, its customers, suppliers or employees, or the allegation of improper or discrimin atory employment

practices, or human rights violations; compliance with environmental, health and safety regulations and laws; and other risks and uncertainties, including but not

limited to those described in the “Risk and Uncertainties” section of the Company’s AIF and the “Managing Risks” section of t he Company’s MD&A for the year ended

December 31, 2021, which are available on SEDAR at www.sedar.com under the Company’s profile. All of the forward-looking statements made in this document are

qualified by these cautionary statements. Although the Company has attempted to identify important factors that could cause a ctual results to differ materially from

those contained in forward-looking information, there may be other factors that cause results not to be as anticipated, estimated, forecast or intended and readers are

cautioned that the foregoing list is not exhaustive of all factors and assumptions which may have been used. Should one or more of these risks and uncertainties

materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those described in for ward-looking information. Accordingly,

there can be no assurance that forward-looking information will prove to be accurate and forward-looking information is not a guarantee of future performance.

Readers are advised not to place undue reliance on forward-looking information. The forward-looking information contained herein speaks only as of the date of this

document. The Company disclaims any intention or obligation to update or revise forward ‐looking information or to explain any material difference between such and

subsequent actual events, except as required by applicable law.