Search Documents
Search Again
Search Again
Refine Search
Refine Search
-
Consideration of Potential Effects of Climate Change and Resulting Hydrologic Impacts on Mine DevelopmentsBy Getu F. Biftu
There is general agreement among scientists that global surface temperatures have been increasing during the past decades. The increase in temperature is postulated to be the result of either an incre
May 1, 2004
-
Production of Ultrafine Ferrite Using Designed ExperimentsBy D. K. Matlock, D. J. Hamre, J. G. Speer
Ultrafine ferrite (UFF) grains may be produced in surface layers of plate steels using controlled intermediate cooling followed by deformation. Experiments were conducted using a 0.12 C - 1.26 Mn stee
Jan 1, 2004
-
Improved Input Parameters and Numerical Analysis Techniques for Temporary Support of Underground Excavations in Weak RockBy Jeffrey D. Oke
While significant progress in underground construction engineering has occurred in the past few decades, a number of fundamental deficiencies persist regarding the recognition, prediction, and mitigat
Jun 1, 2012
-
Assessment of Ozone-Pre-Treatment of Sulfide Bearing Gold Ores to Prevent the Impact of CyanicidesBy Michel Épiney, COREM, Mario Drapeau, Caroline Olsen, Claude Bolduc, Benoit Levasseur
"Several metal sulfide minerals (such as copper, zinc and iron), generally abundant in precious metal-containing ores, are known to dissolve during the cyanidation process. These unwanted reactions co
Jan 1, 2016
-
Appendix II. Royalty Check ListBy Karl J. C. Harries
"The following is an outline or check sheet of some things that might be looked at when considering the concept of a royalty or royalty provisions. It is not intended as a guide to what is right or wr
Jan 1, 2003
-
Maintaining the reliability of a plant electrical systemBy A. P. Williams
"This paper presents an overview of plant electrical systems in general, a discussion of the problems that may occur due to plant growth, the maintenance required to maintain the reliability and safet
Jan 1, 1987
-
Preferred explosives for blasting in the presence of combustible custsBy M. J. Sapko, R. W. Watson, E. S. Weiss
The relative incerdivity of several blasting agents was evaluated in the Bureau's Bruceton Experimental Mine (BEM) . The minimum charge weights resulting in the ignition of predispersed oil shale dust
May 11, 1988
-
Improved Defect Control and Mechanical Property Variation in High Pressure Die Casting (HPDC) of A380 Alloy by High Shear Melt ConditioningBy J. L. Nebreda, Z. Fan, J. B. Patel
"A380 alloy has been widely employed to produce thin-wall components via high pressure die casting (HPDC). During HPDC processing, there is a significant problem of property variation even with the ve
Jan 1, 2018
-
BRAZIL - The Vazante Zinc Mine, Minas Gerais, Brazil: Constraints on Willemitic Mineralization and Fluid EvolutionBy Rodnei Graça, Jorge Silva Bettencourt, Lena Virgínia Soares Monteiro, Baruch Spiro, Tolentino Flávio De Oliveira
Abstract - The Vazante Mine is located in the Vazante District, the largest zinc district in Brazil. The Vazante deposit consists dominantly of an unusual willemitic ore. Small sulfide bodies are tect
Jan 1, 1999
-
The Influence of Surface Roughness on the Fatigue Performance of Selective Laser Melted Aluminium Alloy A357By Kai Zhang, Aijun Huang, Jeremy H. Rao, Xinhua Wu, Paul Rometsch
"As one of the most typical additive manufacturing (AM) technologies, selective laser melting (SLM) removes many of the shape restrictions that limit materials design, thereby allowing computationally
Jan 1, 2018
-
In-Situ Leaching of Gold DepositsIn-Situ Leaching (ISL) process plants are low cost producers for uranium deposits where the geology is suitable. In the 1970s, a three-year pilot ISL program occurred on gold ore from the Ajax Mine, C
Jan 1, 2011
-
The Thermodynamics of Titanium Corrosion in Acidic SystemsBy A. Alfantazi
Recently, titanium and its alloys have been the materials of choice for the liner and internal components of autoclaves used to extract Ni and Co from laterite ores. There have been many corrosion inc
Jan 1, 2004
-
Development Plan of Individual Unit PMIS Using SmartphoneBy Jae-sang Ahn
As the amount of construction information used in the growing construction field increases, the importance of efficient construction field management has been growing. Therefore, construction industry
Aug 1, 2013
-
Accurate Live Measurments for Shaft Aligment during Sinking or Shaft RemediationBy G. Bonin, A. Jamal, G. Preciado, S. Gillis
"Accurate, easy to obtain, and reliable methods of measurement are the cornerstone of shaft and tunnel developments - during their sinking, operation and maintenance, or in some cases, remediation. Th
Jan 1, 2019
-
Connecting Mines and Communities: An Overview of the Elk Valley in S.E. British ColumbiaDelivering Our Products On any given day in North America, 80 kilometers of rail cars are engaged in moving our product. Global Customer Base Our business accounts for more than 30% of all bulk
May 1, 2006
-
Role of Oxygen in Interfacial Phenomena during High Temperature ReactionsBy K. S. Coley, M. A. Rhamdhani, G. A. Brooks
Interfacial phenomena in high temperature reactions such as between iron alloy and slag is well documented but not fully understood. It is believed that a gradient of oxygen concentration plays an imp
Jan 1, 2004
-
Wear mechanisms in high silicon content Al-Si alloys produced by casting and spray depositionBy M. Elmadagli
Wear mechanisms of two commercial aluminum alloys, namely a spray formed and extruded Al-25%Si alloy, and a sand cast A390 alloy (18.5 %Si) that are known to be successful in cylinder bore technology
Jan 1, 2004
-
Otjikoto Mill Leach Operation in 2015–2016By Eric Barnard, Andreas Nashitati, John Tero, Guy Deschênes, Setta Mbalamba, John Rajala
The Otjikoto Mine, owned at 90% by B2Gold Corporation, is located 300 km north of Namibia’s capital city of Windhoek. The reserves from the open pit mine, estimated at 25.9 million tons with an averag
Jan 1, 2017
-
De Beers, Diamonds and CanadaBy John Hughes
1. De Beers, Diamonds and Canada 1.1. De Beers was founded long ago (1888, the same time that Canada became a country) in a rural mining village in South Africa. Today, we employ 22,000 people acr
Apr 1, 2005
-
Company-Community Agreements, Gender and DevelopmentBy J. C. Keenan
Company-community agreements are widely considered to be a practical mechanism for recognising the rights, needs and priorities of peoples impacted by mining, for managing impacts and ensuring that mi
Aug 1, 2013