Climate Change Data

Environmental Metrics

ESG Focus Areas

• Environmental
• Social
• Governance

Environmental Achievements

• Voluntary remediation of the Tres Mosqueteros mining concession in 2016–2017

Social Achievements

• Full-time community relations group of four persons based in Cajamarca dedicated to community outreach programs

Governance Achievements

• Not disclosed

Climate Goals & Targets

Environmental Challenges

• Expectation of environmental liabilities associated with historical mining and exploration activity.
• Limited information on how representative the samples used in test work are of the metallurgical variability of the deposit.
• Arsenic (and potentially zinc) contents in concentrate may require consideration in either marketing the concentrate product or assessing further downstream secondary processing requirements.

Mitigation Strategies

• Regulus’ subsidiaries SLP and/or Anta Norte must report the existence of environmental liabilities in an environmental baseline study to be excluded from reclamation responsibility.
• Additional metallurgical testwork has been recommended to assess mineralization and geometallurgical variability especially regarding arsenic mineralogy, and to support concentrate marketing and/or secondary processing scenarios.
• Various concentrate marketing and/or secondary processing options should be evaluated once the recommended metallurgical testwork is available to assess metallurgical characteristics.

Supply Chain Management

Supplier Audits: Not disclosed

Responsible Procurement

• Not disclosed

Climate-Related Risks & Opportunities

Physical Risks

• Not disclosed

Transition Risks

• Not disclosed

Opportunities

• Not disclosed

Reporting Standards

Frameworks Used: CIM Definition Standards for Mineral Resources and Mineral Reserves (May 2014), CIM Estimation of Mineral Resources and Mineral Reserves Best Practice Guidelines (November 2003)

Certifications: ISO 9001:2008, ISO 17025:2005

Third-party Assurance: Not disclosed

UN Sustainable Development Goals

• Not disclosed

Not disclosed

Sustainable Products & Innovation

• Not disclosed

Awards & Recognition

• Not disclosed

Environmental Metrics

ESG Focus Areas

• Community Development
• Environmental Remediation
• Sustainable Mining Practices

Environmental Achievements

• Collaboration with local communities on environmental remediation projects (e.g., Tres Mosqueteros remediation project)
• Data collection (e.g., petrographic and hyperspectral data) to facilitate sustainable mining practices

Social Achievements

• Long-term community projects: installation of satellite internet antennas, pasture improvement and conservation, vaccination campaigns, construction of a town square
• Collaborative approach with local communities to increase agricultural production, support improved health and education

Governance Achievements

• Active involvement in local community and environmental initiatives
• Collaboration with neighboring mines (e.g., Tantahuatay, Cerro Corona) to maximize value and address shared challenges

Climate Goals & Targets

Environmental Challenges

• Complex claim position hindering exploration
• Arsenic presence in the ore
• Securing drilling permits
• Resource expansion and reporting
• Obtaining social license
• Project financing without significant dilution

Mitigation Strategies

• Agreements with CMC, Buenaventura, and Gold Fields for exploration
• Multiple pathways to deal with arsenic, including Nuton leaching technology
• Utilization of CMC drill permits and acquisition of new permits
• Substantial resource growth through new drilling and data integration
• Close collaboration with communities to establish sustainable social license
• Non-dilutive financings with Osisko and above-market financing with Rio Tinto

Supply Chain Management

Climate-Related Risks & Opportunities