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Production / Operations Routine +

Capstone Copper Announces Labour Agreements at Mantos Blancos Operation

By The Northwire Desk — AI Analysis Jun 21, 2026 · 16:00 CS · 14.61 Capstone Copper Corp.
CS · Price

Executive Summary

  • Capstone Copper Corp. has successfully ratified new three-year collective bargaining agreements with both unions at its Mantos Blancos Mine in Chile within the legally mandated timeframe.
  • The agreements are structured to support employees and secure the long-term sustainability of the operation, allowing the mine to resume its focus on safe and responsible production following a labor disruption.
  • Mantos Blancos maintains a heavily localized workforce, employing approximately 1,106 direct staff (92% from the Antofagasta region) and supporting a total operational headcount of roughly 2,928 individuals including contractors.

Key Details

  • Agreement Structure: New three-year collective bargaining agreements ratified with both unions at the Mantos Blancos Mine.
  • Regulatory Compliance: Ratification was completed within the legally established timeframe.
  • Direct Employment: Approximately 1,106 employees at Mantos Blancos, with 92% sourced from local communities in the Antofagasta region.
  • Total Workforce: Approximately 2,928 individuals at Mantos Blancos, including roughly 1,822 contractors.
  • Operational Impact: The release's cautionary note references forward-looking statements regarding expectations for operations during a prior strike and its resolution, confirming the labor agreements resolve a material operational disruption.
  • Asset Portfolio: Capstone's operating assets include Pinto Valley (Arizona, USA), Cozamin (Zacatecas, Mexico), Mantos Blancos (Antofagasta, Chile), and Mantoverde (Atacama, Chile).
  • Growth Pipeline: Includes the fully permitted Santo Domingo copper-iron-gold project located ~35 km northeast of Mantoverde, plus a portfolio of exploration properties across the Americas.
  • Corporate Strategy: Focuses on transformational copper production growth, cost and operational optimization, innovation, and disciplined capital allocation to deliver shareholder value while maintaining social license and community benefits.
Read the original news release →

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