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MULSIMNL/Large: Reviving a USBM Tool for Modeling Coal Mines
By M. K. Larson
"Specialized numerical modeling codes have been developed over the years to estimate ground stresses during the excavation of coal in underground mines. One of these tools, MULSIM, a displacement disc
Jan 1, 2015
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Past, Present, and Future of Cement Manufacturing and Decarbonization in the United States - SME Annual Meeting 2025
By Duah Philip, Awuah-Offei Kwame
Regulatory pressure to mitigate the cement industry’s environmental impact has intensified recently, spurring innovation in low-carbon cement technologies. In the United States, cement production, con
Feb 1, 2025
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Mining Software: Digital Tools For All Facets Of Mining
Software exhibitors at MINExpo will feature the newest, the best, the most comprehensive computer-based tools available to get minerals from the ground to the market. From the ?cloud? to the pit, the
Jan 1, 2012
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Tracking Mine Safety Performance Trends To Assess The Risk For A Fatality
By H. Kinilakodi
The authors previously developed a methodology that combines injury and citation measures into an overall mine safety performance evaluation tool, called the safe performance index (SPI). It can be ea
Jan 1, 2012
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Coal Is Still King At PP&L --- But For How Long? ? General
By V. R. Burkhart
Pennsylvania Power & Light Company is an investor-owned public utility which was incorporated under the laws of the Commonwealth of Pennsylvania on June 4, 1920, with general offices at 901 Hamilton S
Jan 1, 1973
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A Geostatistical Procedure For Defining Mineralization Envelopes And Modeling Ore Reserves
By G. Pan
Although geostatistical techniques have been widely accepted as the standard methods for reserve calculations in the mining industry, the production data of many mines frequently differ from geostatis
Jan 1, 1994
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Gas Extraction and In-Situ Oxidation for TBM Tunneling of the Purple Line Extension, Section 1, Los Angeles - RETC2023
By James Corcoran, Richard McLane, Matt Neuner, Joseph DeMello, Hugh Davies
The Los Angeles County Metropolitan Transportation Authority (LA Metro) Purple Line Extension Section 1 (PLE1) is a $3.12 billion USD design-build, underground heavy rail project, connecting an existi
Jun 13, 2023
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Assessing Small Underground Coal Mines For High Safety-Related Risk
By H. Kinilakodi
In 2008, the authors developed a methodology for identifying underground coal mines at high risk for major-hazard events. It focused on major hazard-related violations of safety standards associated w
Jan 1, 2011
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Applications Of Passive Seismic Imaging In Underground Mining
By Ma. X.
Passive seismic imaging is applied in underground mining to analyze the stress redistribution after the occurrence of a major seismic event. The velocity model is established to be utilized in velocit
Feb 27, 2013
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Caterpillar Mining Prepares for Recovery with Technology and Partnerships
By William Gleason
"With desert temperatures climbing high at Caterpillar’s Tinaja Hills Demonstration and Learning Center near Tucson, AZ in September, a group of editors were given a reprieve from the sun and stepped
Jan 11, 2017
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Tunneling Under Highway 401: Construction of Large Diameter Pre-Support Pipe Canopy - RETC2021
By Tyler Lahti, Peter Borgacci, Mary Jane Ferraro, Prakash Nadesparan
Toronto Tunnel Partners (TTP), under contract to Metrolinx/IO, is constructing new twin rail tunnels under the Highway 401 & 409 interchange to accommodate additional tracks to support the GO Expansio
Jun 13, 2021
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The Construction of Two Small-Scale Caving Mines at La Encantada Mine, Mexico
By B. Boutilier, R. Mendoza
"First Majestic Silver Corp. (FMS) is a silver mining company founded in 2002 that operates exclusively in Mexico. It has six producing silver mines, one of which is the La Encantada silver mine (La E
Sep 1, 2019
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Control Of Material Handling At Bethlehem Steel Corporation's Sparrows Point Plant
By T. C. Murray
An automatic control system was recently installed to insure the continuity of operation between the ship docking and ore handling facilities and the computerized conveyor-fed sintering plants and bla
Jan 1, 1978
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Conventional Tunneling Challenges in the Himalayas: A Case Study
By Sharanappa Yalal, Rakesh Kumar Khali
"Himalayan geology poses the most challenging ground conditions almost anywhere in the world, one of the reasons thereof is their evolution as the youngest mountain chains. They are demonstratively ri
Jan 1, 2016
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Analysis Of Airborne And Waterborne Particles Around A Taconite Ore Processing Facility
By Charles W. Axten
Since the mid-1970s, samples of airborne and waterborne fibrous particulates have been collected in the area of the Northshore Taconite Ore Processing Facility by the Minnesota Department of Health (M
Jan 1, 2007
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The Candelaria Concentrator Expansion Project (b0d891d5-30b6-4ab0-b5f4-d3f57c5f9501)
By J. O. Marsden
The Candelaria copper-gold mine is located approximately 25 km south and east of Copiapo in Region III, Chile. The original concentrator was designed to treat 28,000 t/d (30,800 stpd) of chalcopyrite-
Jan 1, 1999
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Dry Chemical Process To Magnetize Pyrite And Ash For Removal From Coal
By James K. Kindig
Hazen Research, Inc., has developed a new process for removing pyritic sulfur and ash from coal. Feed coal is contacted with iron carbonyl vapors, Fe(CO)5, at 190°C which puts a thin skin of magnetic
Jan 1, 1976
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Main Pass – Frasch Sulphur Mine Development
By John M. Ackerman
In the spring of 1988, Freeport-McMoRan Resource Partners Ltd. Partnership, IMC Fertilizer Inc. and Homestake Mining Co., as joint venturers, were awarded the sulphur lease for Main Pass Block 299, le
Jan 1, 1992
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Defining hazard from the mine worker’s perspective
By C. L. Kosmoski, B. M. Eiter, B. P. Connor
"In the recent past, the mining industry has witnessed a substantial increase in the numbers of fatalities occurring at metal and nonmetal mine sites, but it is unclear why this is occurring. One poss
Nov 1, 2016
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Preliminary Design of the Caldecott Fourth Bore
By Bhaskar B. Thapa, Michael T. McRae, Johannes V. Greunen
This paper describes the preliminary design of the fourth bore of the Caldecott Tunnels along State Route 24 in Oakland, California. The paper focus is on two major aspects of the project: initial sup
Jan 1, 2007