Search Documents
Search Again
Search Again
Refine Search
Refine Search
-
Mechanical Fabric and In-Situ Stress Orientations in the Devonian Gas Shales of the Appalachian BasinBy William J. Gregg
Mechanical testing results on oriented Devonian gas shale core throughout the Appalachian basin show a preferred fracture direction perpendicular to bedding. The preferred direction is generally paral
Jan 1, 1986
-
Discrete Element Modeling In Mineral ProcessingBy Barada K. Mishra
The potential merit of the discrete element method (DEM) as a numerical tool for analyzing process engineering problems involving particulate material is discussed. In this method, the dynamic equilib
Jan 1, 1993
-
Dynamic Subsidence BasinBy W. M. Ma, Daniel W. H. Su, K. Centofanti, Yi Luo, W. L. Zhong, Syd S. Peng
3.1 INTRODUCTION The final subsidence basin discussed so far is that developed long after mining has stopped. In a supercritical final subsidence basin, the central portion subsides uniformly. Thus
Jan 1, 1992
-
Grinding Circuit Control PhilosophyBy E. F. ‘Pat’ Nelson, Richard Broom
Our portion of this afternoon’s session is dedicated to the operation of automatic process control associated with small to medium size primary or SAG milling circuits. In recognition of the subjec
Jan 1, 1984
-
Specifying and Acquiring Longwall Shield SupportsBy John Matthews
During 1982 and 1983, it became increasingly clear that North River No. 1 Mine would have to buy a set of replacement longwall shields. Despite extensive efforts to make improvements, the shields that
Jan 1, 1986
-
Influence Of Copper Ions Addition On Fine Coal Filter Cake ParametersBy S. M. Khandrika
It is shown that dewatering of fine coal particles (D50 : 21 microns) is enhanced near the point of zero charge. The coal surface is modified by the addition of copper ions and adjusting pH to precipi
Jan 1, 1993
-
Recovery Of High-Purity Arsenic Trioxide From ArsenopyriteBy Jerome P. Downey
Treatment of tungsten ore at Anschutz Mining Company's Chicote Grande (Bolivia) operation results in a relatively high grade arsenopyrite byproduct stream. Laboratory and miniplant testwork have
Jan 1, 1985
-
Characterization Of Freshly Generated Airborne Quartz DustBy R. Hogg, M. Polat, S. Chander
A fresh dust generator was designed and built in order to study the agglomeration behavior and other characteristics of freshly generated airborne dust. The size distribution of the freshly generated
Jan 1, 1991
-
2016 MPD Student Poster Contest Reviewed Abstracts Mineral & Metallurgical Processing Division Society for Mining, Metallurgy & Exploration Inc. February 24, 2016, Phoenix, AZ. Foreword by Ren Bryce"The seventh annual Mineral & Metallurgical Processing Division (MPD) student poster contest was held last February at the SME Annual Conference & Expo in Phoenix, AZ. A total of 21 students entered t
Jan 1, 2016
-
Liberation modeling and parameter estimation for multicomponent mineral systemsBy R. K. Mehta, G. T. Adel
A review of the literature reveals that methods for simulating the coupled behavior of size reduction and liberation are limited to binary mineral systems containing one composite particle class. The
Jan 1, 1991
-
Chemical Oxygen In Underground Life SupportBy J. W. Mausteller
Chemical oxygen supplies have been used for nearly 60 years, with their greatest application during the last 25 years. They are of two types, the superoxides and chlorate "candles", The superoxides ar
Jan 1, 1971
-
Porgera - Discovery of the Porgera Deposit, Papua New GuineaBy Neil Hillhouse
The Porgera gold district, like many other large gold deposits, has a long history of awareness, but only in the last five years has a geologic understanding of the district permitted the discovery of
Jan 1, 1990
-
A Fault-Diagnostic Expert System For Longwall - ShearerBy Sukumar Bandopadhyay
A present dominant problem is that of high downtime of the longwall shearer used in the coal production process. The means by which this problem can be overcome are many, but one of, the most importan
Jan 1, 1989
-
The Work-Crew Performance Model: A Method For Defining And Building Upon The Expertise Within An Experienced Work Force (ad926623-dd0b-4ffd-9afd-e3ffd1095fbc)By G. T. Lineberry, W. J. Wiehagen, L. L. Rethi
This paper discusses a practical method for enhancing the performance of mining work crews. The method, described as the Work Crew Performance Model (WCPM), seeks to define performance variability wit
Jan 1, 1996
-
Flotation Of Some SilicatesBy Geoffrey Purcell
The flotation response to amine collector of quartz and the feldspars microcline and albite, of the pyroxenes augite and spodumene, and of olivine can be, explained by a physical adsorption model. Flo
Jan 1, 1966
-
Incremental AnalysisCost accounting information is used primarily for (1) planning, control, and performance evaluation; and (2) managerial decision-making. Incremental analysis is a tool for managerial decision-making.
Jan 1, 1999
-
Rock Engineering For Surface Gold MinesBy D. S. Cavers
INTRODUCTION This paper discusses aspects of rock engineering applicable to surface gold mines. Discussion particularly centers on areas in which rock mechanics can enhance the mine productivity o
Jan 1, 1987
-
Tripoli (40fb3fe2-f36f-46d8-a1ad-63663d7fda0f)By Charles T. Steuart, Richard B. Berg
Tripoli and the related mineral commodities such as micro- crystalline silica have been mined for more than 100 years for their abrasive properties. Although abrasive and buffing compound markets are
Jan 1, 1994
-
Kinetic Testing 1. Effects of Protocol Variable on Rates of WeatheringBy Bern Klein, Richard W. Lawrence, Scott Frostad
A laboratory study was conducted to evaluate the effects of various kinetic test protocols on sulfate production, NP depletion and time to acidity. Six test protocols were evaluated including standard
Jan 1, 2000
-
Kyrgyzstan Adopts New Mining CodeBy Scott Horton
In no Confederation of Independent States (CIS) country does the mining sector play quite so commanding a role as in the mountainous Central Asian republic of Kyrgyzstan. Its president, Askar Akayev,
Jan 1, 1998