Statement of Qualifications

Civil engineering is designing, constructing, and maintaining physical structures, and comprises at least a partial component of nearly everything Tierra Group International, Ltd. does. Whether applying our core, geotechnical, water resources, or geologic hazards expertise, inevitably our work leads to modifications made to the natural environment or the construction of man-made structures. Tierra Group applies its civil engineering expertise to the conception, design, construction, and operations of physical structures such as:

  • Tailings Dams
  • Water Dams
  • Heap Leach Pads
  • Waste Rock Dumps
  • Retaining Walls
  • Hydraulic Structures - Canals, Channels, Head Structures, Culverts, Pipelines, and Ponds
  •  Infrastructure - Foundations, Roads, Bridge Abutments

Tierra Group has applied our professional civil engineering expertise designing and constructing dozens of these structures on six continents. This geographic variety has allowed Tierra Group’s Team to develop expertise designing facilities under a variety of challenging geotechnical conditions and climates, such as:

  • Laterites
  • Saprolites
  • Swelling or Collapsible Soils
  • Karst
  • High and Active Seismicity (Earthquakes)
  • High Altitudes (4,000 masl)
  • Tropics

Tierra Group has innovatively adapted to these challenging environments using highly-trained professionals and state-of-the-art techniques and software to execute the following:

  • Conceptual Plans
  • Feasibility Designs
  • Final Engineering Designs
  • “For Construction” Drawings
  • Construction Specifications
  • Resident Engineering
  • Quality Assurance

Regardless of the engineering challenges posed, Tierra Group’s broad experience, intimate attention to site-specific conditions, and keen focus on developing innovative solutions has earned us a respected reputation and loyal clients around the world.


Select Civil Projects

Condor Gold | La India TSF Feasibility Design

Tierra Group provided a feasibility-level Tailings Storage Facility (TSF) design for Condor Gold’s La India Project permitting, a planned 2,000 tpd open pit mine in western Nicaragua. TSF embankments used rockfill from the open pit and a geomembrane liner for…

VIEW PROJECT

Andina Veladero Engineering Review

Tierra Group performed a forensic study to determine the cause for volumetrically non-compliant leakage volumes occurring in the heap leach facilities leak detection system. Tierra Group reviewed the facility design, engineering and construction quality assurance (CQA) information, construction as built…

VIEW PROJECT

Tailings Assurance Audit | Canada

Tierra Group completed a Tailings Assurance Audit (TAA) for a closed Tailings Storage Facility (TSF). The TAA was completed to ensure the TSF and site operations complied with the Company's Tailings Management Standard, which closely mirrors Global Industry Standard on…

VIEW PROJECT

Tailings Review & Assurance Audit | Montana

Tailings Management Assurance Review Tierra Group served as the Lead Auditor and conducted MARs for the TSFs at this confidential project. Tierra Group reviewed all available facility documentation, including OMS Manuals, EAPs, design reports, As-Built Reports, annual inspection reports, and other…

VIEW PROJECT

American Gypsum

American Gypsum Pit Planning and Support Tierra Group began working at American Gypsum’s Eagle-Gypsum mine located in Gypsum, Colorado in 2014 evaluating haul road improvements. A trade-off study provided a tool for American Gypsum to evaluate safety improvements including alternative haul road…

VIEW PROJECT

Aranzazú Mine

The Aranzazú Mine is a copper-gold-silver mine located in the northeastern region of Zacatecas, Mexico. The mine includes both open pit and underground operations. The mill currently processes 2,600 tonnes of ore per day. Tierra Group finalized the geotechnical investigation…

VIEW PROJECT

Robinson Mine

Robinson Mine Tailings Impoundment Audit Prior to joining Tierra Group, our Team completed a third-party tailings impoundment audit. The audit included reviewing operational procedures, monitoring, design, and future tailings storage planning. Produced an audit report for company’s internal use. (Tetra Tech,…

VIEW PROJECT

La Libertad Mine

Tierra Group engineers designed La Esperanza TSF, a 2.1-km long, 35-m high, earthfill tailings dam with an HDPE lined impoundment footprint of 840,000 m2. Tierra Group designed and provided Construction Quality Assurance (CQA) for all subsequent downstream dam stages. Stage…

VIEW PROJECT

Midas Mine

The Midas Mine is located in northern Nevada, and is owned and operated by Hecla Mining Company.  The mine is an underground mine with an operating mill. The mine’s existing tailings facilities are nearing their end of operating life and…

VIEW PROJECT

Newcrest Telfer Tailings Stewardship

Tierra Group provided Tailings Stewardship Services for TSFs and water dams at the Cadia, Terfer, and Red Chris properties. Responsibilities included data/report review; identifying and assisting the client with managing risks, liabilities, controls, and reporting; evaluating progress towards GISTM compliance;…

VIEW PROJECT

Sterling Mine

Sterling Mine is an underground gold mine in southern Nevada which recovers gold through heap leaching and a carbon adsorption-desorption-recovery (ADR) plant. Tierra Group team members have a long history at Sterling, starting with heap leach pad final permanent closure…

VIEW PROJECT

Peñasquito

Tierra Group was selected to assist Goldcorp with global Tailings Stewardship Strategy (TSS) implementation at all of Goldcorp’s active tailings sites in Latin America (Mexico, Argentina, and Guatemala). Tierra Group worked in conjunction with Goldcorp and another global engineering consulting…

VIEW PROJECT