Tierra Group completed an annual dam safety inspection (DSI) to meet both Nevada Division of Water Resources (NDWR) Dam Safety and the client's requirements. The DSI included reviewing monitoring data, a dam and appurtenant structures inspection, and a DSI report.
Tierra Group evaluated and prepared the closure design for Aurora's TSF1 facility. Design components included civil grading of closure surface, stability analysis of closure slopes, and hydraulic design of channels and spillways. A final design support was prepared by Tierra…
Tierra Group performed calculations and developed a technical memorandum requesting temporary authorization to impund within the current stage freeboard limits.
Tierra Group developed a photogrammetry study and basic civil design for mining facilities layout at El Brocal Mine.
The Fire Creek Mine, located in north-central Nevada, is owned and operated by Klondex Gold & Silver Mining Company. The mine is an underground mine that is operating a bulk sampling program and has recently submitted its Preliminary Feasibility Study. As…
Tierra Group completed a trade-off study to evaluate raising the existing Tailings Storage Facility (TSF) or building a new TSF at KGHM's Robinson Mine in White Pine County, Nevada. An Alternatives Decision Matrix (ADM) was developed using weighted qualitative and quantitative parameters…
Tierra Group updated the County’s Standard Operating Procedures (SOPs) for Municipal Operations to maintain the County’s compliance with the requirements for stormwater discharges from the County’s municipal separate storm sewer system (MS4) under the Colorado Discharge Permit System (CDPS). Tierra…
Serving on Newmont Goldcorp’s Tailings Independent Review Board, Tierra Group provided an Independent Dam Safety Review for the Dona Lake Mine tailings storage facility in Pickle Lake, Ontario, Canada.
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…
Tierra Group provided Tailings Stewardship Services for Continental Gold’s Buriticá Project in Antioquia, Columbia which included permitting support, Third-Party Review and construction and operations support. Tierra Group oversaw the development of a 2D hydrodynamic model to support the design of…
Tierra Group provided a raise design for Doe Run's Brushy Creek tailings embankment, a facility first commissioned in 1973. Cone penetration testing, liquefaction analysis, seepage modeling, and slope stability modeling were performed for the embankment. Hydrology, spillway design, and impoundment layout…
Tierra Group completed a site assessment for a weather station to be installed at the site. The assessment evaluated the foundation conditions and provided recommendations regarding anchoring options for the weather station tower and ancillary components. The assessment also identified…
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…
Core Values
Logo
Founders
Team
Clients
History
Featured Teammates
Geotechnical
Water Resources
Civil
Environmental
Geohazards
Projects Map
Geotechnical
Publications
News