Due Diligence Study on an Open Pit Polymetallic Mine
A confidential client requested a modified due diligence study of existing data, reports, and other pertinent and available documentation of an open pit polymetallic mine. The purpose of the study was to determine whether the recoverable tonnage would meet the promised criteria on a consistent basis. Determining the probability of...
Engineering, Mining: Facility Operations & Process Design, Geotechnical, Mining
Eagle Mine Humboldt Tailings Disposal Facility Seepage Cut-off Grouting Program
Marquette County, Michigan
A Grouting Production Program was conducted at the Eagle Mine Humboldt Tailings Disposal Facility in Marquette County, Michigan. The purpose of the production program was to mitigate seepage in the glacial soil deposits contained between an existing soil bentonite wall and the underlying quartzite bedrock foundation.
Facilities: Civil/Site Development, Mining: Closure, Engineering, Environmental Management & Remediation: Engineering Design & Construction Management/Inspection, Federal: Environmental, Environmental Management & Remediation, Environmental Management & Remediation: Environmental Management Systems & Compliance, Mining: Exploration, Federal, Geotechnical: Foundations, Geotechnical, Geotechnical: Grouting, Mining, Geotechnical: Seepage Remediation, Federal: Water Resources
Environmental Justice and Socioeconomic Analyses for Lands Unsuitable for Mining EIS
Anderson, Campbell, Morgan, and Scott Counties, Tennessee
The U.S. Department of the Interior Office of Surface Mining Reclamation and Enforcement (OSM) was considering a petition by the state of Tennessee on whether to restore future mining for a 67,000-acre portion of the scenic Cumberland Highlands in northeastern Tennessee. In response to the petition, OSM completed an Environmental...
Federal: Environmental, Environmental Management & Remediation, Mining: Exploration, Mining: Facility Operations & Process Design, Federal, Mining, Environmental Management & Remediation: Natural Resources & Restoration, Environmental Management & Remediation: NEPA Compliance & Documentation, Environmental Management & Remediation: Socio-Economic Studies & Cultural Resources
Fluorspar Mine Studies
Gannett Fleming conducted a due diligence study on three mines and their processing facilities. Primary concerns addressed were the geology; resources and reserves; available infrastructure and processing capability; and the capital needed to further develop these resources to meet desired rates of production and product quality. The mines had been...
Mining: Exploration, Mining: Facility Operations & Process Design, Information Technology, Mining
Spring Grove, Virginia
A confidential client requested an extensive evaluation of approximately 2,000 acres for the presence of commercial concentrations of heavy minerals.
Engineering, Mining: Exploration, Mining
Locust Point Quarry Hydrogeologic Study
Silver Spring, Monroe, Middlesex, and South Middleton Townships, Cumberland County, Pennsylvania
Residential complaints to the Pennsylvania Department of Environmental Protection (PADEP) about decreased well performance and increased stream flow prompted Hempt Bros., Inc., to retain Gannett Fleming to perform detailed groundwater studies to determine the probable hydrologic impact of quarry dewatering on local residential wells. The surface mine pumps and discharges...
Water/Wastewater: Dams & Levees, Water/Wastewater: Drinking Water, Engineering, Environmental Management & Remediation, Environmental Management & Remediation: Environmental Management Systems & Compliance, Mining: Exploration, Geotechnical: Geologic Hazards, Geotechnical: Geophysics, Geotechnical, Water Resources: Groundwater & Hydrogeology, Geotechnical: Groundwater & Hydrogeology, Environmental Management & Remediation: Litigation Support, Mining, Environmental Management & Remediation: Permitting, Dams & Levees: Planning, Drinking Water: Planning, Water Resources: Planning, Drinking Water: Pumping, Environmental Management & Remediation: Remediation & Management of Impacted Sites, Water Resources: Safe Yield & Water Supply Investigations, Geotechnical: Site Evaluation, Dams & Levees: Special Services, Water/Wastewater, Engineering: Water/Wastewater
Marble Deposit Evaluation
Gannett Fleming provided an independent market value summary of marble and ground calcium carbonate on an in situ per-ton basis for a multinational mining company as part of litigation support services. The marble was located on land jointly owned by the mining company and another party. On the basis of...
Mine Water Passive Discharge Treatment System
A confidential client requested a passive mine discharge treatment system for coal mine discharges emanated from closed deep mines in West Virginia. The client's facility was required by the West Virginia Department of Environmental Protection (DEP) to meet the discharge permit concentration level for a specific element. A significant reduction...
Mining: Closure, Engineering, Mining
Mineral Exploration Support for Prospect Generation
Gannett Fleming has provided exploration support to this multinational mining client for more than a decade, including services related to prospect generation and data conversion, land acquisition, field activities and due diligence, and geotechnical work.
Mineral Sands Exploration
Various Locations in Southwestern Oregon
Oregon Resources Corporation holds mineral interests in five deposits located in a mineral sands province along the southwest coast of Oregon. These deposits have had varying amounts of exploration and mineral processing work performed. The main commodities sought are chromite and garnet.
Engineering, Mining: Exploration, Mining: Facility Operations & Process Design, Mining