Responsibility
The Copper Mark Certification
Stakeholder Notification
The Copper Mark Certification
About The Copper Mark
The Copper Mark is the leading assurance framework for copper, created to demonstrate responsible production practices and the industry’s contribution to the United Nations Sustainable Development Goals. The Copper Mark uses a rigorous site-level assessment process to independently verify whether individual copper producing sites have responsible production practices using 33 criteria across three areas: Environmental, Social, and Governance.
Assessment Schedule
As part of this commitment, Capstone Copper operations will undergo an independent, external assessment to ensure The Copper Mark standards are met, scheduled as follows:
Pinto Valley
May 6 – 10, 2026
Mantoverde
May 25 – 29, 2026
Cozamin
June 15 – 19, 2026
Mantos Blancos
July 6 – 10, 2026
What the Assessment Covers
The sites will be assessed in the following areas:
Environmental protection and sustainable use of resources
Responsible sourcing
of raw materials
Human rights and
labour rights
Health and safety
Community engagement and stakeholder involvement
Business integrity and governance
Providing Feedback
We value the input of our stakeholders throughout The Copper Mark assurance process. If you have any questions, concerns or feedback about our participation in The Copper Mark voluntary standard, please contact us at [email protected].
Independent Auditor
If you wish to contact the independent auditor about a concern regarding our sites or our general activities, please contact the auditor directly:
- Assessment company: Arche Advisors
- Lead auditor: Emily Brennan, Director
- E-mail: [email protected]
The Copper Mark
If necessary, concerns can be raised directly with The Copper Mark through the established complaints mechanism. The Copper Mark can be contacted at [email protected]. Details on the complaints mechanism and the access portal can be found online at:
Learn More
Learn more about The Copper Mark and Capstone Copper’s broader sustainability efforts.