ERO.TO · 2024-10-06 12:00:00

Ero Copper Reports Temporary Power Disruption at the Tucumã Operation Following Severe Windstorm

Corporate Updates

October 6, 2024

Ero Copper Reports Temporary Power Disruption at the

Tucumã Operation Following Severe Windstorm

Vancouver, British Columbia – Ero Copper Corp. (TSX: ERO, NYSE: ERO) ("Ero" or the

“Company”) announces that its Tucumã Operation has experienced a temporary power

disruption following a severe localized windstorm that occurred in the southwest region of

the Carajás Mineral Province in Pará State, Brazil on October 5, 2024. The Company's

workforce is safe, and there has been no damage to infrastructure at the Tucumã Operation.

The regional power grid, including the main 230kV transmission line servicing the region,

sustained damage during the storm, resulting in a loss of power to more than 200,000

residents as well as major industrial users. Power has since been fully restored to residential

communities and partially restored to industrial consumers. The owner and operator of the

transmission line has advised that full power restoration to industrial consumers, including

the Company's Tucumã Operation, is expected within two weeks.

The power disruption at Tucumã has impacted the milling, flotation and filtration circuits

within the processing plant. Mining and crushing operations remain unaffected, with ore

continuing to be placed on the run-of-mine and crushed ore stockpiles. The Company expects

the primary impact will be on the ramp-up schedule of the processing plant, and in turn, full-

year production results at the Tucumã Operation. While the extent of the impact will depend

on the timing of full power restoration, Ero Copper remains well-positioned to manage this

temporary disruption and will provide further updates as the situation develops.

ABOUT ERO COPPER CORP

Ero is a high-margin, high-growth, low carbon-intensity copper producer with operations in

Brazil and corporate headquarters in Vancouver, B.C. The Company's primary asset is a

99.6% interest in the Brazilian copper mining company, Mineração Caraíba S.A. ("MCSA"),

100% owner of the Company's Caraíba Operations (formerly known as the MCSA Mining

Complex), which are located in the Curaçá Valley, Bahia State, Brazil and include the Pilar

and Vermelhos underground mines and the Surubim open pit mine, and the Tucumã

Operation (formerly known as Boa Esperança), an open pit copper mine located in Pará,

Brazil. The Company also owns 97.6% of NX Gold S.A. ("NX Gold") which owns the

Xavantina Operations (formerly known as the NX Gold Mine), comprised of an operating gold

and silver mine located in Mato Grosso, Brazil. Additional information on the Company and its

operations, including technical reports on the Caraíba Operations, Xavantina Operations and

Tucumã Operation, can be found on SEDAR+ (www.sedarplus.ca/landingpage/) and on

EDGAR (www.sec.gov). The Company’s shares are publicly traded on the Toronto Stock

Exchange and the New York Stock Exchange under the symbol “ERO”.

TSX: ERO

NYSE: ERO

1 Ero Copper Corp

FOR MORE INFORMATION, PLEASE CONTACT

Courtney Lynn, SVP, Corporate Development, Investor Relations & Sustainability

(604) 335-7504

[email protected]

CAUTION REGARDING FORWARD LOOKING INFORMATION AND STATEMENTS

This press release contains “forward-looking statements” within the meaning of the United States Private Securities Litigation Reform Act of 1995 and “forward-looking information” within the meaning of

applicable Canadian securities legislation (collectively, “forward-looking statements”). Forward-looking statements include statements that use forward-looking terminology such as “may”, “could”,

“would”, “will”, “should”, “intend”, “target”, “plan”, “expect”, “budget”, “estimate”, “forecast”, “schedule”, “anticipate”, “believe”, “continue”, “potential”, “view” or the negative or grammatical variation thereof

or other variations thereof or comparable terminology. Forward-looking statements may include, but are not limited to, statements with respect to the expected restoration of power and the restart of the

processing plant at the Tucumã Operation; the Company's ability to manage the impact of the power disruption to the commissioning timeline at the Tucumã Operation and to its full-year production

results; and any other statement that may predict, forecast, indicate or imply future plans, intentions, levels of activity, results, performance or achievements.

Forward-looking statements are not a guarantee of future performance. There can be no assurance that forward-looking statements will prove to be accurate, as actual results and future events could differ

materially from those anticipated in such statements. Forward-looking statements involve statements about the future and are inherently uncertain, and the Company’s actual results, achievements or other

future events or conditions may differ materially from those reflected in the forward-looking statements due to a variety of risks, uncertainties and other factors, including, without limitation, those referred

to herein and in the Company's most recent Annual Information Form under the heading “Risk Factors”.

The Company’s forward-looking statements are based on the assumptions, beliefs, expectations and opinions of management on the date the statements are made, many of which may be difficult to

predict and beyond the Company’s control. In connection with the forward-looking statements contained in this press release and in the AIF, the Company has made certain assumptions about, among other

things: continued effectiveness of the measures taken by the Company to mitigate the possible impact of COVID-19 on its workforce and operations; favourable equity and debt capital markets; the ability

to raise any necessary additional capital on reasonable terms to advance the production, development and exploration of the Company’s properties and assets; future prices of copper, gold and other metal

prices; the timing and results of exploration and drilling programs; the accuracy of any mineral reserve and mineral resource estimates; the geology of the Caraíba Operations, the Xavantina Operations and

the Tucumã Project being as described in the respective technical report for each property; production costs; the accuracy of budgeted exploration, development and construction costs and expenditures; the

price of other commodities such as fuel; future currency exchange rates and interest rates; operating conditions being favourable such that the Company is able to operate in a safe, efficient and effective

manner; work force continuing to remain healthy in the face of prevailing epidemics, pandemics or other health risks (including COVID-19), political and regulatory stability; the receipt of governmental,

regulatory and third party approvals, licenses and permits on favourable terms; obtaining required renewals for existing approvals, licenses and permits on favourable terms; requirements under applicable

laws; sustained labour stability; stability in financial and capital goods markets; availability of equipment; positive relations with local groups and the Company’s ability to meet its obligations under its

agreements with such groups; and satisfying the terms and conditions of the Company’s current loan arrangements. Although the Company believes that the assumptions inherent in forward-looking

statements are reasonable as of the date of this press release, these assumptions are subject to significant business, social, economic, political, regulatory, competitive and other risks and uncertainties,

contingencies and other factors that could cause actual actions, events, conditions, results, performance or achievements to be materially different from those projected in the forward-looking statements.

The Company cautions that the foregoing list of assumptions is not exhaustive. Other events or circumstances could cause actual results to differ materially from those estimated or projected and expressed

in, or implied by, the forward-looking statements contained in this press release. There can be no assurance that forward-looking statements will prove to be accurate, as actual results and future events

could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements.

Forward-looking statements contained herein are made as of the date of this press release and the Company disclaims any obligation to update or revise any forward-looking statement, whether as a result

of new information, future events or results or otherwise, except as and to the extent required by applicable securities laws.

TSX: ERO

NYSE: ERO

2 Ero Copper Corp

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