El Mochito Mine

Project Highlights:

  • Upstream Cyclone Tailings Dam Design
  • Downstream Earthfill Tailings Dam Designs
  • Geologic Hazards Assessment
  • Detailed Design for Construction
  • As-Built Drawings
  • Emergency Action Plans
  • Operations Plans
  • Risk Analyses
  • CQA
  • Sighting and Alternatives Analyses
  • Hydraulics
  • Liqefaction
  • Water Balance

El Mochito is an underground zinc/silver mine located in the Santa Barbara Mountains in north-central Honduras. Tierra Group’s Team has been providing Tailings Stewardship Services at El Mochito continuously for the past 26 years. Since 1989, Tierra Group engineers have provided engineering consultancy, design, and construction services for three tailings storage facilities (El Bosque, Pozo Azul, and Soledad) to maintain continuous mining operations. Being located in the tropics, tailings management at El Mochito has been fraught with many challenges including; monsoons, floods, karstik terrain, debris flows, constructing with tropical soils (laterite and saprolite), and social unrest. During the full mine life-cycle of three tailings storage facilities, Tierra Group has persevered with the owners and mine management to maintain continual operations with zero lost-time accidents.

Since 2012, Tierra Group has provided EoR support for the Bosque, Pozo Azul, and Soledad TSFs. Tierra Group engineers provided engineering consultancy, design, and construction services to maintain continuous mining operations for three cyclone sand tailings dams (El Bosque, Pozo Azul, and Soledad). Additional EoR support included performance monitoring data acquisition and review, site-specific dam safety inspections, operations, and performance monitoring assessments.

Tailings management at El Mochito has been fraught with challenges: monsoons, floods, karstic terrain, debris flows, construction in tropical soils (laterite and saprolite), and social unrest. Nevertheless, during the entire mine life-cycle of three TSFs, Tierra Group has persevered with the owners and mine management to maintain operations with zero lost-time accidents.

Additional work in 2023 included supporting the Soledad dam raise by performing stability analyses and civil design of an upstream raise to a crest elevation of 810 meters.

Project Highlights:

  • Upstream Cyclone Tailings Dam Design
  • Downstream Earthfill Tailings Dam Designs
  • Geologic Hazards Assessment
  • Detailed Design for Construction
  • As-Built Drawings
  • Emergency Action Plans
  • Operations Plans
  • Risk Analyses
  • CQA
  • Sighting and Alternatives Analyses
  • Hydraulics
  • Liqefaction
  • Water Balance

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