(TSX: LUN; Nasdaq Stockholm: LUMI) Lundin Mining Corporation ("Lundin Mining" or the "Company") announces that a fire occurred today in the underground mine of the Zinkgruvan operation in Sweden.

On site emergency responders were deployed and immediately initiated response procedures, working closely with the local fire department on arrival. The fire has been fully extinguished.

Our priority is the welfare of our employees and contractors who have been directly affected by the incident. All personnel are accounted for and there are no reported injuries. There were 58 people underground who were evacuated in accordance with procedures and use of rescue chambers. The majority of the personnel were evacuated without delay and those who could not safely evacuate were directed to refuge chambers. Once the fire was extinguished and situation determined safe, remaining personnel were transported to surface.

While an investigation to determine the cause will be initiated, an underground haulage truck was on fire around the 1140 m level of the mine. Relevant authorities and government officials have been notified.

It is too early to determine the impact on the underground mine and when operations can be restarted in the affected area of the mine. Surface operations continue, with the concentrating facilities presently undergoing scheduled maintenance. The Company will issue further statements as appropriate.

About Lundin Mining

Lundin Mining is a diversified Canadian base metals mining company with operations in 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 April 20, 2020 at 19:30 Eastern Time.

Cautionary Statement in 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 expectations regarding the results of operations; expected costs; permitting requirements and timelines; timing and possible outcome of 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 Company's abilit y to comply with contractual and permitting or other regulatory requirements; anticipated exploration and development activities at the Company's projects; and the Company's integration of acquisitions (such as the Chapada mine) and any anticipated benefits thereof. Words such as "believe", "expect", "anticipate", "contemplate", "target", "plan", "goal", "aim", "intend", "continue", "budget", "estimate", "may", "will", "can", "could", "should", "schedule" 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 labour; assumed and future price of copper, nickel, zinc, gold and other metals; anticipated costs; ability to achieve goals; the prompt and effective integration of acquisitions; that the political environment 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. Known and unknown factors could caus e 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: volatility and fluctuations in metal and commodity prices; global financial conditions and inflation; 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 or unusually severe weather; uninsurable risks; changes in the Company's share price, and volatility in the equity markets in general; the threat associated with outbreaks of viruses and infectious diseases, including the novel COVID-19 virus; risks related to negative publicity with respect to the Company or the mining industry in general; reliance on a single asset; potential for the allegation of fraud and corru ption involving the Company, its customers, suppliers or employees, or the allegation of improper or discriminatory employment practices, or human rights violations; 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; risks associated with the estimation of Mineral Resources and Mineral Reserves and the geology, grade and continuity of mineral deposits including but not limited to models relating thereto; ore processing efficiency; risks inherent in and/or associated with operating in foreign countries and emerging markets; security at the Company's operations; changing taxation regimes; health and safety risks; exploration, development or mining results not being consistent with the Company's expectations; unavailable or inaccessible infrastructure and risks related to ageing infrastructure; counterparty and credit risks and customer conce ntration; risks related to the environmental regulation and environmental impact of the Company's operations and products and management thereof; exchange rate fluctuations; reliance on third parties and consultants in foreign jurisdictions; community and stakeholder opposition; civil disruption in Chile; the potential for and effects of labour disputes or other unanticipated difficulties with or shortages of labour or interruptions in production; uncertain political and economic environments, including in Brazil and Chile; litigation; regulatory investigations, enforcement, sanctions and/or related or other litigation; risks associated with the structural stability of waste rock dumps or tailings storage facilities; changes in laws, regulations or policies including but not limited to those related to mining regimes, permitting and approvals, environmental and tailings management, labour, trade relations, and transportation; climate change; compliance with environmental, health and safety laws; enforcing legal rights in foreign jurisdictions; information technology and cybersecurity risks; estimates of future production and operations; estimates of operating, cash and all-in sustaining cost estimates; delays or the inability to obtain, retain or comply with permits; compliance with foreign laws; risks related to mine closure activities and closed and historical sites; challenges or defects in title; the price and availability of key operating supplies or services; historical environmental liabilities and ongoing reclamation obligations; indebtedness; funding requirements and availability of financing; liquidity risks and limited financial resources; risks relating to attracting and retaining of highly skilled employees; risks associated with acquisitions and related integration efforts (including with respect to the Chapada mine), including the ability to achieve anticipated benefits, unanticipated difficulties or expenditures relating to integration and dive rsion of management time on integration; the estimation of asset carrying values; internal controls; competition; dilution; existence of significant shareholders; conflicts of interest; activist shareholders and proxy solicitation matters; risks relating to dividends; risks associated with business arrangements and partners over which the Company does not have full control; and other risks and uncertainties, including but not limited to those described in the "Risk and Uncertainties" section of the Annual Information Form for the year ended December 31, 2019 and the "Managing Risks" section of the Company's MD&A for the year ended December 31, 2019, 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 actual results to differ materially from those contained in forward-look ing 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 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 a pplicable law.

SOURCE Lundin Mining Corporation

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SOURCE: Lundin Mining Corporation

Mark Turner, Director, Business Valuations and Investor Relations: +1 416 342 5565;
Brandon Throop, Manager, Investor Relations: +1 416 342 5583; Robert Eriksson,
Investor Relations Sweden: +46 8 440 54 50