Defiance Silver Corp.
Climate Impact & Sustainability Data (2013-03-19, 2017, 2024)
Reporting Period: 2013-03-19
Environmental Metrics
Waste Generated:267.6Mt
ESG Focus Areas
- Environment
- Social
- Community Impact
Environmental Achievements
- Developed a flora and fauna rescue and protection management plan
- Waste characterization studies were carried out
- No discharge of process water to the environment during operation
- All potentially acid generating waste dumps would be capped and revegetated at closure
Social Achievements
- A technical institute, sponsored by the company, would assist with local capacity building for various positions in the mine
- Development of a number of social and environmental management plans including waste, water, air (dust), hazardous materials, public consultation and security plans
Climate Goals & Targets
Environmental Challenges
- Heavy rains during the rainy season can prevent easy access to the property
- Limited skilled workforce in the area
- Several unions in Mexico that would influence construction and operations
- Primary sulphide mineralization consists of chalcopyrite and pyrite with minor pyrrhotite, bornite, sphalerite, molybdenite and galena. The waste rock static test program on drill core was represented by 300 samples with 100 samples collected from each of the three deposits. With respect to rock type, a large proportion of tonalite (73% of samples tested) at Tepal North classified as potentially acid generating (PAG) compared to Tepal South (58% of samples) and Tizate (48% of samples). For all three deposits, >75% of late dyke and overburden samples typically classify as non-potentially acid generating (NAG). The altered volcanic samples at Tepal North consistently classified as PAG, whereas the unaltered volcanics at Tepal South predominantly classified as NAG. In relation to the in-situ oxidation state, the majority of oxide samples at Tepal South and Tizate classified as NAG.
Mitigation Strategies
- A flora and fauna rescue and protection management plan is a normal requirement during Mexican permitting to manage protected species for mining projects
- Further planning would be required for appropriate waste rock facility design and closure to manage PAG and metal leaching material, as well as a long-term monitoring protocol
- A technical institute, sponsored by the company, would assist with local capacity building for various positions in the mine
- Development of a number of social and environmental management plans including waste, water, air (dust), hazardous materials, public consultation and security plans
Supply Chain Management
Climate-Related Risks & Opportunities
Reporting Standards
Frameworks Used: NI 43-101
Reporting Period: 2017
Environmental Metrics
Social Achievements
- A technical institute, sponsored by the Company, will assist with local capacity building for various positions in the mine.
Climate Goals & Targets
Environmental Challenges
- The source of make-up water supply for processing
- Metallurgical recoveries
- Operating and capital cost escalation
- Unforeseen schedule delays
- The ability to attract and retain experienced professionals
- The ability to raise financing and metal prices
Mitigation Strategies
- adequate engineering, planning and pro-active management
Supply Chain Management
Climate-Related Risks & Opportunities
Reporting Standards
Frameworks Used: NI 43-101
Reporting Period: 2024
Environmental Metrics
Climate Goals & Targets
Environmental Challenges
- Local grade continuity issues
- Local density variability
- Geological interpretation uncertainties
- Metallurgical recoveries based on limited testwork
- Difficulty in attracting experienced professionals
- Incomplete geological structural or geotechnical information
- Potential environmental or social issues
Mitigation Strategies
- Further infill drilling to establish continuity of mineralization
- Develop a procedure for collecting density measurements
- Continue infill drilling to upgrade confidence in grade continuity
- Conduct additional metallurgical tests on all rock types
- Refine recruitment and retention planning, use consultants
- Incorporate more comprehensive geotechnical data from drilling, conduct additional geotechnical assessment
- Conduct meetings with stakeholders, hire locals
Supply Chain Management
Climate-Related Risks & Opportunities
Reporting Standards
Frameworks Used: NI 43-101, CIM
Certifications: ISO/IEC 17025:2017