Rigoberto Preciado Delgado

Industrias Peñoles - Fresnillo PLC (Northwest Mexico Mines) (07/2021 – 10/2024)

Responsibilities:
Responsible for the design, operation, and closure of tailings storage facilities, ensuring efficiency and safety through advanced technology and compliance with national and international standards.
Key Achievements:
-Implemented tailings management system
Assessed compliance with Mining Association of Canada (MAC) standards
- Conducted tailings dam safety reviews (DSI, DSR, Dam Break analysis)
- Implemented new technologies for tailings dam instrumentation monitoring
- Lead independent panel of experts for tailings management review
- Evaluated tailings dam stability, instrumentation, and interpretation
- Developed Operations, Maintenance, and Surveillance (OMS) manual, TARPs, ERP, and emergency response plan
- Acted as study engineer for a new tailings storage facility

Fresnillo PLC – Noche Buena Mine (06/2016 – 07/2021)

Responsibilities:
- Ensured optimal recovery of gold and silver through innovative processing technologies.
- Evaluated plant performance and implemented improvements to increase recovery rates while prioritizing worker safety and environmental protection.
Key Achievements:
- Increased gold recovery from 92% to 99%
- Certified the plant under the International Cyanide Management Code
- Expanded processing capacity, achieving full commissioning in one month
- Reduced operating costs through the implementation of new technologies

Fresnillo PLC - La Herradura, Soledad Dipolos, Noche Buena Mines (12/2010 – 05/2016)
Responsibilities:
- Maintained targeted recovery and production levels by monitoring plant process variables and operational performance.
Key Achievements:
- Built high-performance teams with unionized personnel
- Reduced workplace accidents, achieving zero accidents in the beneficiation plant for two consecutive years