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Overcoming Challenges in Tunneling for Albany’s Beaver Creek Clean River Project, Albany, New York - NAT2022By Jerry Wang, Greg Bold, Mahmood Khwaja, Rebecca Caldon, William Simcoe
Phase III and Phase IV of the Beaver Creek Clean River Project, Albany, NY, includes microtunnel construction of 2,320 feet of 48-inch/36-inch internal diameter (ID) conveyance pipe and a 525 foot lon
Dec 1, 2022
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Port Mann Main Water Supply Tunnel—Ground Freezing the TBM Face under the Fraser RiverBy Brian McInnes, Joseph A. Sopko, Behzad Khorshidi
"The Port Mann Main Water Supply Tunnel involves a 1km long tunnel beneath the Fraser River from Surrey to Coquitlam, BC. At depths of up to 60 m below ground, the earth pressure reached 6 bar. The tu
Jan 1, 2016
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Industrial Mineral Opportunities In British Columbia And Alberta, CanadaBy W. N. Hamilton
British Columbia is geologically favourable for a rich variety of industrial mineral occurrences. Some have been produced for years, others overlooked until recently. Major production occurs for asbes
Jan 1, 1987
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Gold Recovery From High-Arsenic-Containing Ores At Newmont?s Roasters (f983f2f6-4b58-4eb9-a694-f0892e2303d7)By R. R. Fernández
The Newmont roasting plant in Carlin, Nevada, commenced operating in December 1994. Over the years, refractory ores and pyrite concentrates from different gold deposits constituted the feed to the fa
Jan 1, 2010
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Using Geophysics To Characterize Lignite/Coal Resources - 1.0 Introduction (bb51c3f7-3687-4e3f-b59b-46046126f6f9)By William P. Walsh
In December 1983 the author undertook an investigation in east Texas which was organized to learn the feasibility of applying geophysical techniques over shallow lignite deposits. The work embraced ex
Jan 1, 1986
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Pollutant Levels In Underground Coal Mines Using Diesel Equipment (bfa62798-80e8-4644-84d6-eb09c005e258)By Susan T. Bagley, Kenneth L. Rubow, David H. Carlson, Bruce K. Cantrell, Winthrop F. Watts
Permissible exposure limits (PELs) have been established for gaseous pollutants, carbon monoxide (CO), carbon dioxide (CO2), nitric oxide (NO), nitrogen dioxide (NO2), and some gas-phase hydrocarbons
Jan 1, 1993
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Application of different objective weighting methods in rockburst - RASIM2022By QU Hong-lue, YANG Lin-han
Aiming at the subjective impact caused by subjective weighting method in the establishment of rockburst risk attribute identification and prediction model, the combined weighting method was introduced
Apr 26, 2022
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Recovery Of Zircon And Other Economic Minerals From Wet- Gravity Tailings Using The Floatex Density SeparatorBy Kim McKnight
Dupont has successfully incorporated a Floatex Density Separator into its wet-gravity operations for the recovery of zircon from titanium tailings. Results indicate that the Floatex achieved a zircon
Jan 1, 1996
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Design Diagrams for Estimating Tunnel Face Stand-Up Time in Water-Bearing GroundBy R. Schuerch, G. Anagnostou, R. Poggiati
"The paper presents dimensionless design diagrams for estimating the stand-up time of a tunnel face in saturated ground of medium-low permeability. The diagrams cover a wide range of ground parameters
Jan 1, 2016
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Technology News - Using Mobile Satellites For Exploration Work - Fraser ClaridgeA group of geologists is located in a remote area of North America, without telephone lines, electricity or even running water. They have spent days accumulating data for a mining company that is eage
Jan 1, 1999
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Tunnel Design for When H2O meets FeS2 Underground - NAT2024By Jim Finley, Adam Bedell, Eric Schrader
The CSO 52 Storage Tunnel and Pump Station project consists of 4,700 ft of hard rock tunnel, 2 intakes, and a 4 MGD wet pit pump station. During the geotechnical investigation, it was determined that
Jun 23, 2024
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Evaluation Of Hyperbaric Filtration For Fine Coal Dewatering: Part I (2bf50cb1-82b0-4a2c-86af-5ff91aefd198)By J. G. Groppo
Hyperbaric filtration was evaluated at the laboratory scale for dewatering fine coal cleaned by froth flotation. A laboratory pressure filtration procedure is described to obtain uniform cake structur
Jan 1, 1994
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Iron Carbide, A Possible Replacement For Premium Quality ScrapBy A. W. Swanson
Iron carbide, containing 93.3% Fe and 6.7% C, is a tailor made feed for the electric arc furnace (EAF) and has recently gained worldwide attention as a possible replacement for premium quality scrap.
Jan 1, 1994
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A PC-Based Worker Scheduling System For Underground MinesBy R. L. Grayson
Following lip on a USBM-sponsored research project, the authors have utilized the knowledge-base structure and system concepts from the Sun Sparcstation-based worker scheduling system of the Mine Mana
Jan 1, 1996
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Analysis Of Retreat Mining Pillar StabilityBy Frank E. Chase
Preventing pillar squeezes, massive pillar collapses, and bumps is critical to the safe and efficient recovery of coal during room-and-pillar retreat mining. To help prevent these problems, the U.S. B
Jan 1, 1995
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Thallium Removal From Mining Influenced Wastewater Using Permanganate Oxidation - SME Annual Meeting 2022By L. Berwick, A. Karunanayake, D. Skutt, H. Heath, J. Wang
Thallium (Tl) is a highly toxic heavy metal, soluble over a wide pH range. Tl levels may exceed discharge limits in mining-influenced water associated with processing gold, lead, cadmium, zinc, and co
Mar 2, 2022
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Goldstrike Mineralogy And Process OptionsBy H. J. H. Pieterse
This paper highlights the mineralogy of the Barrick Goldstrike Mines Inc. area. The mine is located at the north end of the Tuscarora Spur and is part of the Bluestar/Goldstrike subdistrict of the Car
Jan 1, 1993
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Underground Ventilation Remote Monitoring and Control SystemBy Kirk H. P. E. McDaniel, Mark T. Strever, Keith G. Jr. Wallace
This paper presents the design and installation of an underground ventilation remote monitoring and control system at the Waste Isolation Pilot Plant. This facility is designed to demonstrate safe und
Jan 1, 1995
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Cyanidation Of A High Grade Gold Flotation ConcentrateBy D. A. Knight
The property is located in the Porgera Valley 600 Km North West of Port Moresby. The remote location is 2500 m above sea level. The mine area has 3,600 mm of annual rainfall and a temperate climate wi
Jan 1, 1992
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Testing Procedure For Determination Of Coal Seam Compressive Strength In The LaboratoryBy V. B. Achanti
Reliability of the compressive strength of a coal seam determined in the laboratory is often subjected to debate. Effects of the coal seam's inherent characteristics, specimen preparation, testin
Jan 1, 1996