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Generation Of Random Networks For Evaluation Of Mine Ventilation Network Methods
By Jeong-Heum Kim, Jan M. Mutmansky, Y. J. Wang
The simulation of randomness in a system of components is important in certain types of systems analyses. This paper presents procedures for generating ventilation networks that are random in many of
Jan 1, 1991
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Risk Mitigation In Global Mining Development
By Wayne W. Murdy
Since 1993, Newmont Mining has been growing through the development 'q of three major foreign mining operations with a fourth under construction. The first project, Yanacocha in Peru, began ope
Jan 1, 1997
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Cycles In Metal Prices
By M. C. Roberts
Metal producers are now suffering through a major downturn in prices for their products even though it has only been a few years since they were enjoying high prices. From an historical perspective, t
Jan 1, 2003
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Rapid Excavation Research - Elements Of A New Excavation Technology
By James J. Olson
INTRODUCTION The need for Government-sponsored research and development to increase excavation rates and lower costs for tunneling and mining operations in a variety of rock types has been emphasiz
Jan 1, 1974
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14. Discovery of the La Caridad Porphyry Copper Deposit, Sonora, Mexico
By Guillermo P. Salas
The Consejo de Recursos Naturales No Renovables of the Mexican government entered into an agreement with the United Nations in 1964 for the mineral exploration of a large area in Estado de Sonora, Mex
Jan 1, 1991
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Construction Of Straight Creek Tunnel, Colorado
By R. C. Hopper, A. A. Mathews, T. A. Lang
DESCRIPTION OF PROJECT The Straight Creek Tunnel site is located approximately sixty (60) miles west of Denver, Colorado, on Interstate Route 70 in the vicinity of Loveland Pass, in the Rocky Mount
Jan 1, 1997
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Evaluation Of Personal Diesel Particulate Samplers
By Robert A. Haney, Richard T. Stoltz
In July, 1988, the Mine Safety and Health Administration (MSHA) Advisory Committee on Standards and Regulations for Diesel-Powered Equipment in Underground Coal Mines recommended that the Secretary of
Jan 1, 1989
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Evaluation of the Senior Coal Mine Managers’ Working Stress
By Rong Guo, Qi He, Jinsuo Zhang
"Coal mine ranks No.1 among the 6 major high-risk industries, so it is no doubt that the senior managers in the coal mine bear more stress than other industry executives. The massive working stress re
Jan 1, 2017
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Current Issues in US Mine Ventilation
By Raja V. Ramani
The importance of adequate mine ventilation for good health and safety conditions has been recognized since miners first ventured underground. All over the world, governmental actions on mine health a
Jan 1, 1993
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New Cone Crusher Designs
By Jerry Motz, Gary Beerkircher
Through a joint development program between Bougainville Copper Ltd. and Nordberg, the MP1000 cone crusher was developed and tested during the period between 1982 and 1987. Following the successful pr
Jan 1, 1992
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Update On The Continuing Functions Of The Former US Bureau Of Mines (c95b4eb0-e02e-42e7-a33b-1ba55c1d3cb3)
By John N. Murphy
In fiscal 1996, the US Congress directed that the US Bureau of Mines (USBM) be closed. Certain functions were reassigned to other agencies. The remaining employees were separated and the unoccupied si
Jan 1, 1997
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Assessment Of Empirical Design Methods For Tunnels In Rock
By Gregory B. Baecher, Walter Steiner, Herbert H. Einstein
1. INTRODUCTION Empirical methods have always been important in tunneling in contrast to many other branches of engineering. Beginning in the late 19th century, when engineering entered the phase o
Jan 1, 1979
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Durability Design Requirements for Reinforced Concrete Underground Structures
By Pooyan Asadollahi, Praveen Krishna, Michael Joye
"Durability design for underground structures is an increasing focus of designers and owners in the underground construction industry. Many owners have expanded their requirements for durability desig
Jan 1, 2016
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Calculation of the Amount of Methane Degassing From a Longwall Based on a Mathematical-Physical Model
By J. den Drijver, M. Opahle, R. Inderst
Safety reasons render necessary the advanced calculation of the amount of methane degassing from a longwall in the scope of the ventilation planning of mines. Today empirical methods, which are based
Jan 1, 1997
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Determination Of Radiation Levels To Be Encountered In Underground And Open-Pit Uranium Mines - Introduction
By J. F. Archibald
It is often alleged by mine ventilation engineers that no reliable method exists to forecast the levels of radiation to be encountered in future uranium mines. It results that the design of uranium mi
Jan 1, 1980
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Translucent Face Partition For Longwall Dust Control
By Michael H. Leon, John A. Organiscak
Controlling worker dust exposure on longwall mining systems is difficult because the working face area serves as an immediate return during the mining cycle and the amount of airborne dust generated i
Jan 1, 1993
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Evaluation of Performance of Mike Equipment Operators By Indirect Measurement Of Stress
By Edehran Lotfi, Terrence Stobbe
INTRODUCTION Mobile excavating and handling equipment are important 'tools of trade' in the mining and construction industries. The handling of this equipment must be mastered so that it
Jan 1, 1986
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Electrochemical Processing Of Ocean Manganese Nodules With Microbial Enhancement To Recover Valuable Metals
By K. A. Natarajan, Abha Kumari
In this paper, electroleaching and electrobioleaching of ocean manganese nodules are discussed along with the role of galvanic interactions in bioleaching. Polarization studies using a manganese nodul
Jan 1, 2003
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Educating the Coal Mining Industry in the Field of Engineering Health and Safety
By Albert W. Evans
Introduction Engineering Health and Safety is concerned with the understanding of the complex interplay between the risk of injury with technological ,environmental, individual, organisational and
Jan 1, 1986
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Rapid Determination Of Non-Newtonian Flow Behavior In Mineral Suspensions
By S. K. Kawatra, A. K. Bakshi
Mineral suspensions in water show Newtonian flow properties at low percent solids. However, this changes to a non-Newtonian regime as the pet-cent solids increases. For Newtonian fluids, viscosity is
Jan 1, 1997