Ero Copper achieves major milestone with first saleable copper concentrate production at Tucumã Project

Ero Copper Corp. (TSX: ERO, NYSE: ERO) (“Ero” or the “Company”) has announced a significant milestone at its Tucumã Project with the production of saleable copper concentrate, exceeding initial production targets. This achievement follows the successful commissioning of the milling and flotation operations in Q2 2024.

The Company has made rapid progress in bringing the Tucumã Project online, with key milestones achieved throughout the year, including:

• Completion of primary, secondary, and tertiary crushers, screening, and conveyance systems in March 2024
• Commencement of full mine operations in April 2024
• First ore through the milling and flotation circuits in mid-June 2024
• Successful completion of the first 24-hour shift of continuous mining and milling operations in July 2024

Ero is now focused on completing remaining surface installations and ramping up operations to achieve commercial production levels by the end of Q3 2024. This involves reaching 80% of design mill capacity and 80% of design recovery rates.

“Producing our first saleable copper concentrate at the Tucumã Project and successfully completing the first 24-hour shift of continuous mining and milling operations are important milestones as we begin our ramp-up towards commercial production,” said David Strang, Chief Executive Officer. “We are rapidly progressing towards an important inflection point for our consolidated copper production and cash flows. It is an exciting time for the Company and with copper prices performing well year-to-date, the timing of the completion and ramp-up of Tucumã could not be better.

“I would like to extend my congratulations to our entire team, from senior leadership to our construction and commissioning teams, as well as our contracting, engineering, and supply chain partners. Their outstanding work on the construction of Tucumã – completed on time, without injury or environmental incident, and within line of sight of the original Project budget – is commendable. Notably, Tucumã was designed, built, and managed by Ero’s Brazilian Engineering, Procurement, Construction Management team, with approximately 85% of the capital expenditures made within Brazil. This achievement is a testament to the depth and technical strength of mining and project development talent and resources available in Brazil.”