Performed a TSF Design Review to support a NI 43-101 compliant Feasibility Study. The TSF design incorporated a paste tailings disposal method in an environmentally sensitive fisheries habitat in south-central Montana.
Tierra Group performed a pre-investment technical tailings due diligence review.
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…
Confidential Client – Tierra Group performed a pre-investment Technical Due Diligence Review that included a detailed analysis and risk assessment for a 150-m high co-disposal (tailings and waste rock) storage facility. The facility included two 80-m high waste rock platforms…
Tierra Group International performed a Tailings Technical Due Diligence Review for a confidential client in Armenia.
Tierra Group performed an independent technical peer review of the Boleo Mine’s operating tailings storage facility design. In doing so Tierra Group identified several design modifications that when implemented for future stages will reduce sustaining capital cost expenditures by several…
Tierra Group was retained to perform metallurgical due diligence on two operating properties and two prospects in early stage development. The two existing operations consisted of a convention heap leach followed by ADR to produce a Dore on-site and a…
Tierra Group developed a site-wide water management plan to improve operational water usage and management at Jaguar Mining's Turmalina Complex in Minas Gerais, Brazil. Turmalina is a zero-discharge facility that required optimizing tailings supernatant usage in the process, enhanced evaporation…
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…
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.
The La India Mine, located in Sonora Mexico and owned by Agnico Eagle Mines, is expected to pour an average of 90,000 ounces of gold per year over the reserve life. Tierra Group provided engineering design services for Phase 2 and…
Tierra Group conducted geo-electrical testing to locate leaks present in the geomembrane liners underlying a Solution Conveyance Canal, Sumps 1 and 2, and the Intermediate Pond at Timmins Gold Corp’s San Francisco Mine in Sonora, Mexico. Leak detection testing procedures…
Lode-Star Gold, Inc. in advance of their proposed mining operations is preparing to submit a Physical Separation Facility application with the state of Nevada for their Goldfield Bonanza Project located in Esmeralda County, Nevada. The mine is located in the…
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