Capstone Copper’s goal is to be an industry-leading responsible source of copper - and we know we can only be successful if we earn, build and sustain trust with our many stakeholders.

We are committed to creating growth not only for our investors, but for the communities where we operate and where our employees work and live. That’s why we remain focused on innovation and continually pursuing best practices based on international standards of responsible mining.

As the world strives towards an inclusive, low-carbon future in which copper is essential, we have a responsibility to ensure this important natural resource is supplied as sustainably as possible.


Foundation for Growth - 2021 Sustainability Report
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Base para el crecimiento – Informe de sostenibilidad 2021 (Versión en Español)
View Our Sustainability Report

Mantos Copper – Reporte de Sostenibilidad (Spanish Version)
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Seeing Beyond - 2020 Sustainability Report
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Viendo más allá – Informe de sostenibilidad 2020 (Versión en Español)
View Our Sustainability Report

Our Approach to Sustainability


We are committed to environmental stewardship. Read how we’re reducing our footprint through following best practices and setting progressive goals.

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We are committed to meaningful engagement with our host communities. See how we’re contributing to positive social and economic development in the communities where we work.

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We are committed to preserving fresh water for local communities. Learn how our desalination plant allows us to use seawater to supply local mining operations.

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We are committed to our people. Learn why we’re investing in our employees to develop a skilled, engaged and respectful workforce.

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We are committed to effective corporate governance practices that create value for investors. See some of our Governance Awards & Recognitions.

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Health & Safety

We are committed to achieving zero harm for our employees and contractors. Read about how we are embedding a strong safety culture.

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“Our approach to sustainability has long been guided by our Core Values, especially Work Responsibly and Always Accountable. Recently we have begun to ask ourselves if we can do more – Seeing Beyond our immediate responsibilities to further improve life for our people and communities, whether through technological innovations, safety improvements or new policies. We also shifted our language from sustainability to environment, social, and governance (ESG) issues to recognize the strong interests of our investors and stakeholders.”

Our Core Values


Safety is non-negotiable. Making safe choices ensures and can improve the health and well-being of our people, contractors, and communities. Zero harm is the ultimate goal.


We take ownership for ourselves and our work. We act with integrity. We do everything honestly, ethically, fairly and transparently.


We strive to excel at all we do. We continuously seek innovative ways to improve the business. We are focused on growth and committed to unlocking the full potential of ourselves, our teams, and our resources.


We develop open and constructive relationships. We embrace diversity. We see ourselves as stewards of resources. We care deeply for our people, the environment, and communities.

Capstone is a responsible corporate citizen and contributes to the development of responsible mining practices in our industry through our membership and participation in associations that elevate industry standards, develop and share best practices, and keep us up to date on regulatory requirements.

We also support community organizations and initiatives to improve the development and wellbeing of the communities where we operate.

At the corporate level, in 2020 Capstone was a member of the European Copper Institute.

Our operations also support the following trade associations and civic service organizations:

Pinto Valley Mine Image Pinto Valley
Trade Groups
  • Member of CAMIMEX (Mexico Mining Chamber)
  • Member of the HR Committee of CAMIMEX
  • Member of CANACINTRA (National Chamber of the Transformation Industry)
  • Member of CANCHAM (Canada Chamber of Commerce in Mexico)
  • Member of CONCAMIN (Confederation of Industrial Chambers of the United Mexican States)
  • Member of the Mexican Association of Mining Engineers and Metallurgists
Civic Groups
  • Member of CEMEFI (Mexican Centre for Philanthropy)
  • Member and co-participant in the Cooperation Agreement with the UAZ (Autonomous University of Zacatecas)
  • Member and co-participant in the Cooperation Agreement with UTZAC (Technology University of the State of Zacatecas)
Cozamin Mine Image Cozamin
Trade Groups
  • Member of the Arizona Mining Association – Board seat
  • Member of the Arizona or US? SME (Society for Mining, Metallurgy & Exploration) – Secretary/Treasurer
  • Member of AEMA (American Exploration & Mining Association – Board seat
  • Member of the Mining Foundation of the Southwest
  • Member of AMIGOS (Arizona Mining Industry Gets Our Support
Civic Groups
  • Member of United Fund – Board seat
  • Member of the Globe Unified School District – Board seat
  • Member of the Bullion Plaza Cultural Center & Museum – Board seat
  • Member of the Globe-Miami Chamber of Commerce
  • Member of the Cobre Valley Watershed Partnership
  • Member of the Cobre Beautification Committee
  • Co-organizer of the Globe Trash Mobsters
Mantos Blancos Mine Image Mantos Blancos
Trade Groups
  • SONAMI (Sociedad Nacional de Minería, Chilean National Mining Society)
Civic Groups
  • CORPROA (Corporación para el Desarrollo de la Región de Atacama, Atacama Regional Development Corporation)
  • Corporación de Desarrollo de Chañaral (Chañaral Development Corporation)
Mantoverde Mine Image Mantoverde
Trade Groups
  • SONAMI (Sociedad Nacional de Minería, Chilean National Mining Society)
Civic Groups
  • CORPROA (Corporación para el Desarrollo de la Región de Atacama, Atacama Regional Development Corporation)
  • Corporación de Desarrollo de Chañaral (Chañaral Development Corporation)
Workers Image

COVID-19 Response

The COVID-19 pandemic is a global health and safety crisis affecting Capstone’s operations, our workforce, local communities and the regions where we operate.

Apart from a four-week national shutdown of all non-essential public and private sector activities in Mexico during April 2020, our mines have continued operating throughout the pandemic. (Mining was designated as an essential service in Arizona and Mexico.) We are thankful that we have not experienced any significant outbreaks up to the release of this report.

We implemented COVID-19 protocols to protect the health and safety of our workforce and local communities. We continue to assess the potential health and business impacts across our operations along with evolving guidance from government authorities, the Centers for Disease Control and Prevention, and the World Health Organization.

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Our practices to limit COVID-19 exposure and transmission include:

  • Across all sites and offices, those who do not need to be onsite to support copper production may work from home.
  • Employees who are diagnosed with COVID-19 or required to self-isolate as a precaution receive paid sick leave in line with local employment regulations.
  • Employees who have been absent from work with flu-like symptoms undergo medical checks.
  • Pre-shift meetings take place outdoors to maximize physical distance.
  • Truck cabs and working surfaces are sanitized.
  • Personal protective equipment standards have been updated to include face masks, which we provide to all employees.
  • We provide information about COVID-19 preventative measures that employees can take home and use to keep themselves and their families safe and healthy outside of work.
Food Hampers Image Cozamin COVID Image

At Cozamin, we offered an additional health program for any employees who were more vulnerable due to underlying health conditions. More than 50 employees continued to be paid even while they could not work. They also received support on health issues such as diabetes, as well as help in safely returning to work.

We also supported the health and safety of our local communities:

  • Pinto Valley donated N95 masks to medical and public sector workers and made a $100,000 contribution to the United Fund of Globe-Miami. An employee contribution was matched by the company for an additional $8,200.
  • Cozamin signed a Collaboration Agreement with the Municipal President of Zacatecas. Through this partnership, Cozamin provided food, cleaning and sanitizing products, scholarships, masks, monetary donations and purchased hospital beds for the state government to support response efforts in the state of Zacatecas. Based on input from our employees, we identified additional needs in community services such as shelters, orphanages and homes for seniors, and supported them with monetary donations or food baskets.
  • Santo Domingo donated food boxes to local communities.
  • Corporate office employees donated to the local foodbank. Capstone provided a matching donation.
  • We conducted an anonymous pulse survey at Pinto Valley, Santo Domingo and the corporate office to measure employee perceptions of Capstone’s engagement and support through the pandemic. We learned that overall employees were satisfied with our response to the pandemic and level of communication and support.