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LUN.TO ·

Lundin Mining Announces Labour Agreement at Caserones Mine

Corporate Updates

Corporate Office

1055 Dunsmuir Street

Suite 2800, Bentall IV

Vancouver, BC V7X 1L2

Phone +1 604 689 7842

lundinmining.com

NEWS RELEASE

Lundin Mining Announces Labour Agreement at Caserones Mine

Vancouver, August 24, 20 24 (TSX: LUN; Nasdaq Stockholm: LUMI) Lundin Mining Corporation (“Lundin

Mining” or the “Company”) is pleased to announce today that an agreement has been reached with the union at

Caserones and accepted by the majority of the union members through a vote. Further to the press release

dated August 12, 2024 entitled “Lundin Mining Provides Update on Labour Negotiations at its Caserones Mine“ ,

a new collective bargaining agreement will be signed imminently. The Company will now focus on a safe back-

to-work plan and an efficient ramp-up of operations which has been running at approximately 50% capacity

during the labour action.

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 was submitted for publication, through the agency of the contact persons set out below on

August 24, 2024 at 17:00 Vancouver Time.

For further information, please contact:

Stephen Williams, Vice President, Investor Relations: +1 604 806 3074

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 are “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 approach to resolut ion and procedures

regarding the strike and its expectations regarding the return to normal operations; the Company’s guidance on the timing and amount of future

production and its expectations regarding the results of operations; expected costs; permitting requirements and timelines; t iming and possible

outcome of pending litigation; the results of any Preliminary Economic Assessment, Pre -Feasibility Study, Feasibility Study, or Mineral Resource and

Mineral Reserve estimations, life of mine estimates, and mine and mine closure plans; anticipated market prices of metals, cu rrency exchange rates,

and interest rates; the development and implementation of the Company’s Responsible Mining Management System; the Company’s a bility to comply

with contractual and permitting or other regulatory requirements; anticipated exploration and development activities at the C ompany’s projects;

expansion projects and the realization of additional value; expectations regarding, and ability to complete, the acquisition of Filo Corp. and the 50/50

joint venture with BHP; the anticipated development and other plans with respect to the acquisition and joint venture; the Co mpany’s integration of

acquisitions and expansions and any anticipated benefits thereof; and expectations for other economic, business, and/or compe titive factors. Words

such as “believe”, “expect”, “anticipate”, “contemplate”, “target”, “plan”, “goal”, “aim”, “intend”, “continue”, “budget”, “e stimate”, “may”, “will”, “can”,

“could”, “should”, “schedule” and similar expressions identify forward -looking information.

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

management, including that the Company can access financing, appropriate equipment and sufficient labour; assumed and future price of copper, zinc,

gold, nickel and other metals; anticipated costs; ability to achieve goals; the prompt and effective integration of acquisiti ons; that the political

environment in which the Company operates will continue to support the development and operation of mining projects; and assu mptions related to the

factors set forth below. While these factors and assumptions are considered reasonable by Lundin Mining as at the date of thi s document in light of

management’s experience and perception of current conditions and expected developments, these statements are inherently subje ct to significant

business, economic and competitive uncertainties and contingencies. Known and unknown factors could cause actual results to d iffer materially from

those projected in the forward -looking information and undue reliance should not be placed on such information. Such factors include, but are not

limited to: the inability to resolve labour disruptions; global financial conditions, market volatility and inflation, includ ing pricing and availability of key

supplies and services; 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, floodin g or unusually

severe weather; uninsurable risks; volatility and fluctuations in metal and commodity demand and prices; significant reliance on assets in Chile;

reputation risks related to negative publicity with respect to the Company or the mining industry in general; delays or the i nability to obtain, retain or

comply with permits; risks relating to the development of the Josemaria Project; health and safety laws and regulations; risk s associated with climate

change; risks relating to indebtedness; economic, political and social instability and mining regime changes in the Company’s operating jurisdictions,

including but not limited to those related to permitting and approvals, nationalization or expropriation without fair compens ation, environmental and

tailings management, labour, trade relations, and transportation; inability to attract and retain highly skilled employees; r isks inherent in and/or

associated with operating in foreign countries and emerging markets, including with respect to foreign exchange and capital c ontrols; project financing

risks, liquidity risks and limited financial resources; health and safety risks; compliance with environmental, unavailable o r inaccessible infrastructure,

infrastructure failures, and risks related to ageing infrastructure; changing taxation regimes; the inability to effectively compete in the industry; the

inability to currently control Filo Corp. and the ability to satisfy the conditions and consummate the acquisition of Filo Co rp. and the joint venture

transaction with BHP on the proposed terms and expected schedule; risks associated with acquisitions, expansions and related integration efforts,

including the ability to achieve anticipated benefits, unanticipated difficulties or expenditures relating to integration and diversion of management time

on integration; risks related to mine closure activities, reclamation obligations, environmental liabilities and closed and h istorical sites; reliance on key

personnel and reporting and oversight systems, as well as third parties and consultants in foreign jurisdictions; information technology and

cybersecurity risks; risks associated with the estimation of Mineral Resources and Mineral Reserves and the geology, grade an d continuity of mineral

deposits including but not limited to models relating thereto; 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 process ing efficiency; community

and stakeholder opposition; regulatory investigations, enforcement, sanctions and/or related or other litigation; financial p rojections, including estimates

of future expenditures and cash costs, and estimates of future production may not be reliable; enforcing legal rights in fore ign jurisdictions; risks

associated with the use of derivatives; risks relating to joint ventures and operations; environmental and regulatory risks a ssociated with the structural

stability of waste rock dumps or tailings storage facilities; exchange rate fluctuations; compliance with foreign laws; poten tial for the allegation of fraud

and corruption involving the Company, its customers, suppliers or employees, or the allegation of improper or discriminatory employment practices, or

human rights violations; risks relating to dilution; risks relating to payment of dividends; counterparty and customer concen tration risks; activist

shareholders and proxy solicitation matters; estimation of asset carrying values; relationships with employees and contractor s, and the potential for and

effects of labour disputes or other unanticipated difficulties with or shortages of labour or interruptions in production; co nflicts of interest; existence of

significant shareholders; challenges or defects in title; internal controls; risks relating to minor elements contained in co ncentrate products; the threat

associated with outbreaks of viruses and infectious diseases; mining rates and rehabilitation projects; mill shut downs; and other risks and

uncertainties, including but not limited to those described in the "Risks and Uncertainties” section of the Company’s MD&A f or the three and six

months ended June 30, 2024 and the “Risks and Uncertainties” section of the Company’s Annual Information Form for the year en ded December 31,

2023, which are available on SEDAR+ at www.sedarplus.com under the Company’s profile.

All of the forward -looking information in this document are qualified by these cautionary statements. Although the Company has attempted to iden tify

important factors that could cause actual 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, forecasted or intended and readers are cautioned that the foregoing list i s not exhaustive of all factors

and assumptions which may have been used. Should one or more of these risks and uncertainties materialize, or should underlyi ng assumptions prove

incorrect, actual results may vary materially from those described in forward -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.