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; and providing recommendations for improved safety, instrumentation, monitoring, and tailings management.
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…
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…
Tierra Group provides Tailings Stewardship Services for Nyrstar's Myra Falls Mine Tailings Storage Facility. Tierra Group performed a 5-year Dam Safety Review consistent with the Canadian Dam Association protocols, site training and in depth inspections of management practices and facilities…
Tierra Group reviewed and provided pit slope recommendations and conducted hydrological assessments for the Resource 1 and 2 deposits water management system at Troy Resources’ Karouni Mine (Karouni). Advanced pre-feasibility level recommendations for pit development were provided based on benchmarking…
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,…
Tierra Group is implementing a corporate Tailings Stewardship Strategy (TSS) at all of ASARCO Grupo Mexico’s mines in Arizona, USA (Hayden, Mission and Ray mines). Tierra Group conducted a site visit to each site to perform dam safety inspections, interview…
Tierra Group was commissioned by Doe Run to design a new tailings storage facility at the Brushy Creek Mine. Tierra Group completed a geotechnical investigation including boring, classifying, and sampling soil and rock. Trade-off studies were performed to minimize construction…
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…
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…
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…
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…
Hydrogeologic Characterization Tierra Group provided hydrogeological support for data characterization and developed a conceptual and groundwater model to evaluate mine water inflows and the associated groundwater drawdown due to mine dewatering activities. Water Management Technical Review Tierra Group provided a…
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