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

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.

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

Similar projects

La Negra Mine

Tierra Group performed a tailings storage facility safety (TSF) audit for the 90 m high upstream constructed tailings dam at La Negra Mine in Querétaro, Mexico. The project included a TSF dam inspection and Dam Safety Inspection Report (DSIR) containing operational…

VIEW PROJECT

Hecla WWR 5840’ Raise EDC

Tierra Group prepared an engineering design change to increase the maximum elevation permitted for the mine’s existing WWR. Project included a waste rock dump expansion civil design and stability modeling to verify design complied with regulatory dam safety criteria.

VIEW PROJECT

Pan American Shahuindo Engineering Design

Tierra Group performed a detailed engineering design for a 4km access road and diversion channel, and the feasibility design for water diversion structures (including electrical and mechanical layout for a pump station). Tierra Group also performed a geotechnical investigation and updated…

VIEW PROJECT

La Trinidad

Tierra Group began work at La Trinidad providing heap leach pad construction recommendations and a water balance. Tierra Group continued support with a heap leach pad expansion design, slope stability analyses, hydrologic analyses, diversion design, liner design, and leach solution…

VIEW PROJECT

Sweetwater Mine

Sweetwater Mine Permitting Tierra Group’s Team began work at the Sweetwater mine in 1993 assisting permitting and developing tailings impoundment management strategies for the mine. We successfully designed and installed an innovative internal seal for repair of the mine’s damaged…

VIEW PROJECT

Dam Low Level Outlet Replacement

Tierra Group completed a geotechnical investigation, which included overseeing hollow stem auger (HSA) drilling and laboratory testing, that characterized the existing earthen dam. Tierra Group completed a low-level outlet structure design that was believed to have been compromised by internal…

VIEW PROJECT

New Jersey Mill TSF Scoping Study

Tierra Group completed the design for two 3-meter upstream raises to an existing paste tailings storage facility at New Jersey Mining Company’s New Jersey Mill site near Kellogg, Idaho. Work included performing a cone penetration testing (CPT) investigation of the…

VIEW PROJECT

Copperstone Project

Tierra Group International, Ltd. participated as the geotechnical lead engineering firm for the Copperstone Project Pre-Feasibility Study (PFS) in Arizona, U.S.A. Tierra Group was responsible for tailings and waste rock storage, water management and underground geotechnics design and cost estimates…

VIEW PROJECT

Minera Plata Real | Los Gatos Project

Tierra Group provided detailed Stage 1 and 2 Tailings Storage Facility design, conducted a process plant geotechnical foundation investigation, and provided Construction Quality Assurance for Sunshine Silver Mining's Los Gatos Project in Chihuahua, Mexico.

VIEW PROJECT

Dam Assessment

Tierra Group performed a site visit and visual inspection of a dam to assess its overall condition and provide the Owner recommendations for continued maintenance, monitoring, and improvements. The assessment was a follow-up to previous work completed by Tierra Group…

VIEW PROJECT

Antapaccay

Glencore’s Antapaccay mine is located in the Espinar province, Cuzco, Perú. Tierra Group logged geotechnical, geological and geo-mechanical properties of drill core advanced in Antapaccay's Northern Pit. Approximately 6,000 meters of core were logged. Specific samples were selected for geotechnical…

VIEW PROJECT

Mascota Mine

Creston Mascota Mine is located in Chihuahua, Mexico and is owned and operated by Agnico Eagle Mexico. Tierra Group designed the Phase 4 heap leach pad, buttress, which included geotechnical investigations, slope stability analyses and a water balance for Agnico…

VIEW PROJECT