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 and Best Management Practice (BMP) improvement recommendations.
Tierra Group is providing a detailed Tailings Storage Facility design and a process plant geotechnical foundation investigation for Sunshine Silver Mining's Los Gatos Project near San Francisco, Mexico.
Tierra Group provided a desktop and field review of B2Gold’s Santa Pancha Mine hydrogeology . The review identified data gaps in site data and provided recommendations for ameliorating the existing site hydrogeology model and improve underground water management system efficiency.
Tierra Group performed a pre-investment technical tailings due diligence review.
Tierra Group International performed a Tailings Technical Due Diligence Review for a confidential client in Armenia.
Tierra Group served on an Independent Engineering Team performing a tailings management and operations Due Diligence Technical Review at the Morro do Ipe iron ore mine in Minas Gerais, Brazil.
The Bolivar mine is a 3,000 tonne per day underground mining operation in Chihuahua, Mexico producing copper, zinc, silver, and gold. Space constraints in mountainous terrain require dewatering tailings to reduce required area for tailings storage. Tierra Group is assisting…
Black Butte Copper Project Tierra Group performed a third-party design review of a Cemented Tailings Facility (CTF) and multiple process and freshwater ponds. Tailings will be mixed with cement at the planned paste plant and deposited in the CTF along…
Tierra Group performed a Dam Safety Review (DSR) including geotechnical investigations and seepage and slope stability analyses for a 20-m high TSF at this 300‑tpd underground polymetallic mine. The audit was prepared following the Mt. Polley tailings dam failure in…
El Limón Mine is a 1,200-tpd underground gold mine in northwest Nicaragua that has operated since 1941. Tierra Group’s team has been responsible for tailings management at El Limón since 2000. Tierra Group engineers have provided engineering consultancy, design, and…
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 tradeoff study was completed providing a tool that American Gypsum used to evaluate safety…
Sterling Mine Sterling is an underground gold mine in southern Nevada. Gold recovery is 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…
Tierra Group provided Tailings Stewardship Services including a dam inspection, slope stability analysis review and operational improvements for Endeavour Silver’s Bolanitos tailings storage facility.
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