El Limón Mine

Project Highlights:

  • MSE Dam Raise
  • TSF Design
  • Water Balance
  • Operations Plans
  • Rock-Fill Conventional TSF Design
  • PMF Hydrology and Hydraulics Designs
  • Facility Expansion
  • Tailings Coverage
  • Seismic Stability
  • Site-Wide Mine Closure & Reclamation Plan
  • Aquifer Testing
  • Independent Design Review
  • Geotechnical Investigation
  • Pre-Feasibility Study
  • Construction Quality Assurance

Tailings Storage Facility & Engineer of Record (2012-present)

Tierra Group engineers provided engineering consultancy, design, and construction services for three Tailings Storage Facilities (TSF) (Santa Rosa, Santa Rosa West, and San José) to facilitate 20 years of uninterrupted mine operations. Tierra Group’s services spanned the full tailings lifecycle including siting studies, environmental impact assessments, permitting, feasibility through detailed engineering design, bid documents, resident engineering, construction quality assurance, operations and maintenance, decommissioning, closure, and reclamation.

Tierra Group served as the Engineer of Record (EoR) for the Santa Rosa, Santa Rosa West, and San José TSFs. As the EoR, Tierra Group developed detailed TSF water balance spreadsheet tools, reviewed monitoring data collected by B2Gold and later Calibre each month, conducted annual TSF inspections, and prepared an annual monitoring report to document TSF performance and dam safety.

Aquifer Testing

Tierra Group performed a comprehensive pumping test data review of the mine's revised dewatering plan, with inflows up to 3,000 gpm.

Independent Design Review

Tierra Group performed an independent design review of an open pit design and provided design improvement recommendations.

Stability Evaluation

Tierra Group performed a geotechnical field investigation to support the San Jose TSF Stage 4 final design and evaluate pit slope stability. Tierra Group incorporated field data into a 3D geologic/geotechnical model that evaluated pit slope stability.

Pit Feasibility Investigation

Tierra Group conducted a geotechnical field investigation to characterize the geology and determine preliminary pit slopes for three new pits. Pit slope angles were used to support the feasibility pit design (performed by others).

Pit Feasibility Investigation

Tierra Group provided CQA services (earthworks, geomembrane, and geotechnical monitoring instrumentation) for the San Jose Tailings Storage Facility (TSF) Phase 4B expansion.

Project Highlights:

  • MSE Dam Raise
  • TSF Design
  • Water Balance
  • Operations Plans
  • Rock-Fill Conventional TSF Design
  • PMF Hydrology and Hydraulics Designs
  • Facility Expansion
  • Tailings Coverage
  • Seismic Stability
  • Site-Wide Mine Closure & Reclamation Plan
  • Aquifer Testing
  • Independent Design Review
  • Geotechnical Investigation
  • Pre-Feasibility Study
  • Construction Quality Assurance

Similar projects

Stibnite Gold Project

The Stibnite project is located in the remote central Idaho Rockies near the town of Yellow Pine.  It is a brownfields gold-antimony project featuring three open pits and an anticipated 22,000 tpd plant throughput, along with challenging terrain and environmental…

VIEW PROJECT

Çöpler Tailings Storage Facility and Heap Leach Facility Technical Review

Tierra Group has a history of annually providing third-party technical reviews for the tailings storage facility and heap leach facility at Anagold's Çöpler Gold Mine in Middle Anatolia, Turkey. Additionally, Tierra Group currently performs independent technical reviews for the rockfill…

VIEW PROJECT

Buriticá Tailings Stewardship & Cyanide Speciation

Tierra Group provided Tailings Stewardship Services for Continental Gold’s Buriticá Project in Antioquia, Columbia which included permitting support, Third-Party Review and construction and operations support. Tierra Group oversaw the development of a 2D hydrodynamic model to support the design of…

VIEW PROJECT

Campo Morado Mine

Tierra Group performed a Dam Safety Review (DSR) for Nyrstar’s tailings storage facility (TSF) located in Campo Morado (Guerrero, Mexico).  Tierra Group served as the Tailings Reviewer to ensure conformity with local regulations, the Nyrstar Tailings Storage Facility (TSF) Standard,…

VIEW PROJECT

Bunker Hill | Tailings Storage Facility (TSF) Design

Tierra Group designed the Bunker Hill dry stack TSF. The TSF design was challenging given the limited land area, steep terrain, seasonal cold weather, and surface water management. Tierra Group’s scope of work included siting the facilities, geotechnical investigations, civil…

VIEW PROJECT

El Mochito Mine

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…

VIEW PROJECT

Caeté Complex

Tierra Group developed a site-wide water management plan, and performed a liquefaction potential study following the Samarco tailings dam failure in Minas Gerais, Brazil. A tailings storage facility water balance was developed to optimize water usage and minimize risks at…

VIEW PROJECT

Camino Rojo

Heap Leach Procurement & Construction Quality Assurance Tierra Group provided Issued for Construction (IFC) design drawings and specifications for procurement requirements for the expansion of the Camino Rojo HLF. Information required included liner specifications, drainage collection piping, and quantities. Additionally,…

VIEW PROJECT

North Mara Mine | Tailings Assurance Audit

Tierra Group completed a TAA for the North Mara Tailings Storage Facility (TSF). The TAA was completed to ensure the TSF and site operations complied with Barrick’s Tailings Management Standard, which closely mirrors the Global Industry Standard on Tailings Management (GISTM)…

VIEW PROJECT

Camino Rojo Heap Leach Design

Tierra Group provided a heap leach facility detailed design (for construction), procurement, CQA and project management for the Camino Rojo Mine in Zacatecas, Mexico.

VIEW PROJECT

Yauricocha Mine

The Yauricocha Mine is a polymetallic (copper, lead, zinc) underground mine located in Yauyos Province, Lima, Peru. Tailings are deposited in the Yauricocha Tailings Storage Facility (TSF) located 3km from the process plant. Tierra Group was engaged in 2015 to…

VIEW PROJECT

Big Ledge Mine

Tierra Group developed a water balance model to track flows into a backfilled pit at the closed Big Ledge Mine Barite Operation near Wells, Nevada. The Model was used to determine pipeline sizing to a remote treatment pond that is…

VIEW PROJECT