Mina Sweetwater

Project Highlights:

  • Tramitación de Permisos
  • Planes de Operaciones de Relaves

Tramitación de Permisos de Mina Sweetwater

El equipo de Tierra Group empezó trabajando en la mina de Sweetwater en 1993 asistiendo con obteniendo el permiso y desarrollando estrategias de la gestión de Embalse de relaves para la mina. También diseñamos e instalamos un innovador sello interno para reparación de los dañados decanta el conducto de descarga de la mina. El equipo de Tierra Group empezó trabajando en Sweetwater otra vez en 2015 diseñando un depósito de relaves (TSF) de presa de 5 pies de altura y un recrecimiento de vertedero. Los retos del diseño único fueron superados con una investigación de campo integral incluyendo CPT y perforación de barrena de vástago hueco. Se realizaron análisis de licuefacción e incorporados en el diseño de recrecimiento de aguas arriba. Un modelo de hidrología difícil se completó y un recrecimiento del vertedero existente fue diseñado. El diseño del recrecimiento fue aprobado por Consejo de Seguridad de Presas y Reservorios MDNR en marzo de 2016. La construcción se completó en 2017 temprano con apoyo con Tierra Group supervisando las actividades de construcción y evaluación de cambios de diseño propuestos. Un informe de As-Built se completó en abril de 2017 conforme a requisitos de MDNR. Tierra Group continuó su apoyo a Sweetwater mediante el desarrollo de un plan de deposición, balance de agua, estudio de hidrología y modelado de geotécnica para el diseño recrecimiento de la presa de relaves adicional.

Project Highlights:

  • Tramitación de Permisos
  • Planes de Operaciones de Relaves

Similar projects

Bald Mountain Mine

Tierra Group assisted the Bald Mountain Mine Project Development Team with an evaluation of potential uses for spent ore on legacy heap leach facilities. Tierra Group completed a collaborative trade-off study with site personnel evaluating spent ore use as overliner…

VIEW PROJECT

Douglas County, CO | 2020 Stormwater Support

Tierra Group provided engineering and permitting support to Douglas County Public Works Engineering for NPDES Phase II Program compliance. Tierra Group’s scope of work included developing Runoff Control Plans (RCPs) for new County facilities, updating RCPs at existing County facilities,…

VIEW PROJECT

Mexican Hat PEA Update

Tierra Group conducted an update of the Mexican Hat Project’s Preliminary Economic Assessment. Tierra Group’s update included the heap leach facility design and preliminary stacking plan, waste rock storage pad, and crushed rock storage pad design.

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

Stillwater Mine

East Boulder Tailings Independent Review Panel (2018-present) Tierra Group reviewed a TSF design to support an NI 43-101 compliant Feasibility Study. The TSF design incorporated a paste tailings disposal method in an environmentally sensitive fisheries habitat. Tierra Group sits on the Independent…

VIEW PROJECT

Hermosa Project

Tierra Group provided a Third-Party review of the Hermosa Project Tailings Storage Facility Design and Construction stages 1 & 2 in Patagonia, Arizona

VIEW PROJECT

Copperstone Project

Tierra Group International, Ltd. participated as the geotechnical lead engineering firm for the Copperstone Project Pre-Feasibility Study (PFS) in Arizona, U.S.A. Tierra Group was responsible for tailings and waste rock storage, water management and underground geotechnics design and cost estimates…

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

Brushy Creek

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…

VIEW PROJECT

Sweetwater Mine

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…

VIEW PROJECT

Pit Slope Design | County Line Project

Tierra Group conducted a geotechnical investigation program to provide data for pit slope design. Tierra Group provided field support through oriented core logging, pit wall mapping, selected samples for laboratory testing, and provided pit slope design recommendations for safe open…

VIEW PROJECT

NioCorp’s Elk Creek | Tailings Storage Facility (TSF) Feasibility Study

Tierra Group advanced the TSF design to a Feasibility Level according to the Canadian National Instrument NI 43-101 and the U.S. Security and Exchange Commission’s Subpart SK-1300 regulation. Tierra Group’s scope of work included a geotechnical investigation, engineering analysis, and TSF…

VIEW PROJECT