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Construction Of A TBM Launch Box In A Complex Urban Environment
By Vincent Tirolo
The proposed Second Avenue Subway is a new two-track subway line running from 125th Street and Park Avenue at the north, east along 125th Street to Second Avenue and south along Second Avenue to the F
Jan 1, 2013
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Industrial Minerals 1995
The United States continued to depend on imported bauxite during 1995. Domestic bauxite mine production remained at about the same level as in 1994. It amounted to less than 1% of total world produc
Jan 1, 1996
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Phased Approach to Stormwater Tunnel Rehabilitation
By Todd Wanless
This paper addresses the challenges experienced by the designer and three government agencies during implementation of major improvements for the Turkey Creek Tunnel in Kansas City, Kansas. The tunnel
Jan 1, 2008
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Enhancement of a Process Flowsheet for Recovering and Concentrating Critical Materials from Bituminous Coal Sources Mining, Metallurgy and Exploration (2cb05380-838b-438b-903d-9a26c1191012)
By A. Noble, R. Q. Honaker, J. Werner
Recovery of rare earth elements (REE) from coal-related resources has recently received significant interest due to supply concerns and their key roles in critical industries and defense-related techn
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Enhancement of a Process Flowsheet for Recovering and Concentrating Critical Materials from Bituminous Coal Sources Mining, Metallurgy and Exploration
By A. Noble, R. Q. Honaker, J. Werner
Recovery of rare earth elements (REE) from coal-related resources has recently received significant interest due to supply concerns and their key roles in critical industries and defense-related techn
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Characterization Of Copper Flotation Products Utilzing The JKMRC/FEI Mineral Liberation Analyzer (MLA)
By D. Brosnahan, J. Gathje
Newmont Metallurgical Services (NMS) recently acquired a Scanning Electron Microscope (SEM) with a JKMRC/FEI Mineral Liberation Analyzer (MLA). With the MLA software package, raw particle image and X
Jan 1, 2007
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2009 Permeation Test Results For Grouts Made With Ultrafine Cements
By Raymond W. Henn
The 30th annual short course ?Grouting Fundamentals and Current Practice? was held at the Colorado School of Mines, June 22-26, 2009. The field demonstration portion of the course was conducted June 2
Jan 1, 2009
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Daniel Island Surprise?Sand Lens Lurking In Cooper MARL, Charleston, SC
By Ray Brainard
Charleston Water System?s Daniel Island Extension Tunnel, initially thought to be the simplest of the four replacement tunnels to design and build, became the most challenging after the discovery of a
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Ventilation efficiency is it cost effective?
The efficiency of a coal mine ventilation circuit is usually measured by the ratio of the sum of the face quantities divided by the quantity supplied by the fans. Other types of systems use the power
Jan 1, 2009
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Settlements Due to Blasting Vibrations
By Werner Bilfinger, Claudio Nahas, Marcelo Waimberg
"INTRODUCTION The so called Porto Maravilha Project consists of the re-urbanization of a 500 ha area in the Rio de Janeiro port region. Several changes in local infrastructure are being implemented, i
Jan 1, 2016
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The Rib-In-Roc Pre-Reinforcement System For Large Underground Openings
By Bengt L. Stillborg
INTRODUCTION This paper summarizes the result of a two and a half year research program. The objective of the research was to develop a fundamental understanding of the Rib-in-Roc method. Through t
Jan 1, 1979
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Mining and Metals Industry Structure and Interaction with the Circular Economy
"INTRODUCTION In recent years, there has been increasing focus on environmental and social impacts of the extractive industries, climate change and resource scarcity. The concept of the circular econo
Jan 1, 2018
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A Case Study of Geological Characterization of Co-rich Ferromanganese Crusts over a Giant Guyot "Takuyo No.5," the Northwestern Pacific
By H. Sato, B. Thornton, K. Nishi, A. Usui
"Northwestern Pacific submarine seamounts are believed to be future marine mining areas of ferromanganese crusts, which contain hi-tech industrial metals, such as Co, Ni, Te, Ti, Pt, and REEs. The Tak
Sep 1, 2014
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Lead and Zinc
By P. Raffinot, C. H. G. Bushell, S. Hodgson, E. F. Milner, H. J. Bosshardt, N. Draper, D. E. Pickett, Edwin T. McKnight, J. Prieto
Zinc ranks third and lead fourth in world nonferrous metal conumption. In 1972 the free world consumed 3,333,000 mt of refined lead and 4,422,000 mt of refined zinc. The lead tonnage was divided into
Jan 1, 1985
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Construction of I-90 Highway Tunnels Under Boston’s South Station Rail Yard by Box Jacking
By Peter van Dijk, Gary Almeraris, Philip Rice
This paper describes the Contractor’s value engineering design and the construction of the Interstate I-90 highway tunnel sections under the South Station railroad yard in Boston, MA for the Central A
Jan 1, 2001
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Morenci’s In-pit Crushing and Conveying System
By William M. Dowall
The recently completed in-pit crushing and conveying project at Phelps Dodge's Morenci Mine is rated among the world's leading materials handling projects. The operation involves the crushin
Jan 1, 1993
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Final Tunnel Liner At The Mill Creek 3 Project
By M. Schafer
The 6-m- (20-ft-) diameter cast-in-place tunnel lining for Phase 3 of the Mill Creek Tunnel (MCT3) has been completed. This article summarizes aspects of liner design and ad-dresses the construction a
Jan 1, 2008
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A Critical Overview of Dithiophosphinate and Dithiophosphate Interactions with Base Metal Sulfides and Precious Metals Mining, Metallurgy and Exploration
By D. R. Nagaraj, Napoleon Tercero, Raymond Farinato
Historically, as for most reagents used in flotation, the wide-spread use of dialkyl dithiophosphinates as collectors in practical applications has preceded a detailed scientific understanding of how
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An Innovation In Machine Tunneling
By J. Donovan Jacobs
Many improvements in the art of underground excavation have appeared during the past two decades. These improvements have been both in methods and in machinery and have resulted in more economical con
Jan 1, 1974
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Longwall Mining, Shale Gas Production, and Underground Miner Safety and Health
This paper presents the results of a unique study conducted by the National Institute for Occupational Safety and Health (NIOSH) from 2016 to 2019 to evaluate the effects of longwall-induced subsurfac
Jan 7, 2020