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Risk Modelling Techniques for Complex Tunnelling Projects from Deterministic to Probabilistic Methods: Have We Done Enough? - NAT2022
By P. Sander, M. Spiegl, J. Reilly, A. Van Droogenbroeck
Although the outdated idea of calculating risk as the deterministic product of its likelihood and impact is not entirely a thing of the past, a multitude of organizations have adopted the usage of pro
Dec 1, 2022
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Deep Cut -Ground Control And Worker Safety In Coal Mines (SME Annual Meeting March 1-3, 1999, Denver, Colorado)
By E. R. Bauer
The trend in underground room-and-pillar coal mining is to employ remote-control continuous mining machines and extended cuts, 12 m (40 ft) deep or more. This system of coal extraction, adopted by ove
Jan 1, 1999
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Carbon Footprint Reduction in Montreal Blue Line Extension - RETC2023
By V. Nasri, P. Jarast, M. Bakhshi
The Montreal metro Blue Line Extension toward the northeast consists of the construction of five new underground stations. The project includes 6 kilometers of the tunnel which will be constructed usi
Jun 13, 2023
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Iron Mining: The Problems Of Plenty
By Walfrid Been
There are no particular nor unique features of iron mining that are not shared in some degree by all mining ventures everywhere. There are, however, at least three problems that have acquired a specia
Jan 1, 1964
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A Structured Approach For Integrating Process Control, Engineering And Business Systems
By J. M. Applegate
In the same way that a blueprint communicates information about a structure, a useful systems architecture should provide information that guides the construction and implementation of computing syste
Jan 1, 1998
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Opening Supports to Segmental Linings:A Novel Shotcrete Support Solution (4dda697d-11f6-4774-84f0-12e4af00636d)
By Anthony Harding
In a world of technology and electronic communication, it is easy to forget what engineers do best with a problem: sitting around a table, exchanging views and ideas with sketches and respecting every
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Optimizing Mill Performance: Real—Time Grinding Insights - SME Annual Meeting 2025
By Karl Gugel, Dante Garcia, Peter Czel, Eduardo Nunez, Joshua Morales, Boris Sullcahuaman
Real-time operational excellence is achieved through the seamless integration of various components. Key aspects include precise instrumentation, real-time data collection, data analytics, and an effi
Feb 1, 2025
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Subsurface Investigations By Seismic Refraction ? Introduction
By Eugene A. Hickok
Seismic surveys utilizing the MD-1 have been performed by Geophysical Specialties Company since 1957 in many parts of the, U. S. and Canada and in several foreign countries. These surveys have proven
Jan 1, 1962
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Hydrologic Considerations In Mine Closings
By Allan M. Johnson
Dewatering is a major operational cost at sane mines. Under certain conditions, costs associated with water disposal may continue beyond the productive life of the mine. For mines with mineralized wat
Jan 1, 1983
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MSHA Update
By Henry Chajet
Good morning, it is truly an honor to have been invited to speak before you today Before I begin my update on MSHA's activities, I?d Like t o quickly say a few words about the American mining con
Jan 1, 1981
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Evaluation of Mining Methods and Systems
By Jan M. Mutmansky
Since 1973 when the first edition of the SME Mining Engineering Handbook was published, many significant changes have occurred in the US mining industry. The industry went through a fairly prosperous
Jan 1, 2008
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Mine Evaluation and Investment Analysis
By Donald W. Gentry
This section deals with one of the most fascinating aspects of mining the evaluation of mine investment opportunities. Be-fore proceeding further, it is important to clarify the meaning of some fundam
Jan 1, 2008
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New Techniques In Beneficiation Of The Florida Phosphates Of The Future - Introduction
By James E. Lawver
At the present time, the Florida phosphate industry is experiencing one of the worst marked slumps in its one hundred year history. Recent agriculture over-production has caused low grain prices such
Jan 1, 1983
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NAT 2014 Full Proceedings - NAT2014
By Gregg Davidson, Lonnie Jacobs, Brett Zernich, Alan Howard, Robert Pintabona
All Rights Reserved. Printed in the United States of America. Information contained in this work has been obtained by SME, Inc. from sources believed to be reliable. However, neither SME nor its autho
Dec 1, 2014
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Interpreting Entry Stability and Geologic Hazards Utilizing Borescopes
By T. Klemetti, W. H. Su, M. A. Van Dyke
Entry stability in coal mines is dependent on geologic conditions and engineering controls. Most engineering controls in ground control are predictable and standardized for typical geologic conditions
Jan 1, 2019
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Mineralogy, Alteration, And Geochemical Studies Of The San Luis Gold Deposit, Costilla County, Colorado
By A. Kaina
The San Luis deposit is one of the few documented gold deposits on a detachment surface. This paper presents mineralogic and geochemical data that was gathered to characterize the mineralization, clas
Jan 1, 1994
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New Process for Recovery of Ultra Fine Coal by Pre-Treatment with Surfactant - Mining, Metallurgy & Exploration (2021)
By P. Samanta, Mohammed N. Azad, Gustad F. Taraporewalla, A. K. Mukherjee, Abhay S. Patra, D. Sachinraj
Beneficiation of coal is a water intensive process, and the water is recovered in downstream operations in the high rate thickener (HRT) and vacuum belt filtration (VBF). Clean coal particles entering
Sep 30, 2021
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Economic Considerations Of Comminution Circuits
By Wendi H. Cooksey
This paper examines two comminution circuits on a hypothetical gold ore deposit with both small-scale (1,000 short tons per day) and large-scale (35,000 short tons per day) production rates. The most
Jan 1, 1998
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A Comparative Study of Two Centrifugal Concentrators
By A. R. Laplante
In this paper, the performance of the Knelson Concentrator and of the batch and continuous Falcon Concentrators are compared. The units are based on different operating principles, and perform quite d
Jan 1, 1993
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Heap Leaching 2 Metallurgical Management Of Heap Leaching: Recovery Prediction And Monitoring And Water Balance Management.
By Mike Jahraus
The topic I would like to throw out for discussion this morning concerns the metallurgical solution management of operating a valley fill leach facility where ore depths approach 250 feet and deeper.
Jan 1, 1999