Search Documents
Search Again
Search Again
Refine Search
Refine Search
-
Design And Construction Of Norad Expansion Project "Excavation Phase"
By Gerald G. Griswold, Allan G. Provost
INTRODUCTION The Norad Expansion Project was located 10 miles southwest of Colorado Springs, Colorado, within Cheyenne Mountain. The expansion areas to be excavated would be adjacent to the existin
Jan 1, 1979
-
Annual Review 2003 - Mining Review
By P. A. Plunkert, D. E. Morse, L. McCartan, S. F. Sibley
The average annual growth rate of real gross domes-tic product (GDP) from the third quarter of 2001through the second quarter of 2003 in the United States was about 2.6 percent. GDP growth rates in th
Jan 1, 2004
-
Ground Condition Mapping: A Case Study
By H. Lawson
The Mine Safety and Health Administration (MSHA) issued Program Information Bulletin P09-03in April of 2008, providing formal guidance on using programs that model the redistribution of stress during
Jan 1, 2012
-
TECHNICAL NOTE - Accommodating the Land Use Planning Provisions of the Surface Mining Control and Reclamation Act
By L. W. Saperstein
Public Law (PL) 95-87 contains explicit demands for land use planning in its reclamation and designation sections. Both sections require recognition of local land use plans; however, they are not well
Jan 12, 1983
-
Technical Note - Mine modifications for economic survival —a case study
By R. L. Grayson, G. Mishra
Introduction Many old underground mines have been developed extensively into reserves requiring large numbers of workers to maintain and rehabilitate lengthy track haulages and/or belt conveyor sys
Jan 3, 1987
-
Quarry Expansion – Sustainable Management of Natural Aggregate
By M. L. Tucker, William H. Langer
Many countries, provinces, territories and states in the European Union, Australia, Canada, the United States and elsewhere have begun implementing sustainability programs. Most of those programs, ho
Jan 1, 2004
-
Effect Of Some Heating Parameters On Volume Expansion Of Borax
By B. Kahraman
About 70% of the world?s total boron reserves are located in Turkey. Boron minerals are typically concentrated by attrition scrubbing followed by screening and classification to remove clay minerals a
Jan 1, 2008
-
Some Impressions And Observations Of Soviet Coal Mining Industry By United States Delegation During Visit To USSR Under The 1972/73 Scientific Exchanges Agreement ? Background
By Joseph J. Yancik
An exchange of coal mine specialists was made with the USSR under an "Agreement on Exchanges and Cooperation in Scientific, Technical, Cultural, and other Fields for 1972-73," which was signed by Pres
Jan 1, 1974
-
Alberta Lake Re-Established After Draining to Mine Coal
By Sukru Sumer
East Pit Lake is an artificially created lake that resulted from the remediation and reclamation of surface coal mining operations at TransAlta Utilities' Whitewood Mine in the Wabamun area west
Jan 1, 1995
-
Evaluating Ground Conditions Ahead of a TBM Using Probe Drill Data
By Steven K. Duke, Jay Arabshahi
An economic, real-time probe drill monitoring system was developed for Metropolitan Water District’s Arrowhead Tunnels project to quantitatively evaluate ground conditions ahead of a TBM. This system
Jan 1, 2007
-
Record Performance Of TBM In The 13.5 Km Amlach Tunnel, Austria
By Hans Janzon, Ernst Buechi
INTRODUCTION The headrace tunnel in Amlach is part of a hydro electric power scheme near the city of Lienz in south west Austria. The project is owned and developed by Tiroler Wasserkraftwerke AG,
Jan 1, 1987
-
2009 Permeation Test Results For Grouts Made With Ultrafine Cements
By Raymond W. Henn
The 30th annual short course ?Grouting Fundamentals and Current Practice? was held at the Colorado School of Mines, June 22-26, 2009. The field demonstration portion of the course was conducted June 2
Jan 1, 2009
-
The Four E's Of Productivity
By W. D. Blackburn
If there is a single key to managing a mineral extraction company, it is the control of productivity. American labor costs, in general, tend to be in the range of 10%-15% of total costs. American coal
Jan 1, 1986
-
Mining and Hydraulic Transport of Minerals from Deep-Ocean Floor
By H. Savasci, G. Yarim, J. S. Chung
As part of ongoing deep-ocean mining research, hydraulic transport systems as well as status of deep-ocean mining systems are reviewed in the aspects of manganese nodules and crusts from 8006,000-m de
Jan 1, 1999
-
Estimation Of Incremental Haulage Costs By Mining Historical Data And Their Influence In The Final Pit Limit Definition
By R. Benito
This paper describes the application of modern data-analysis tools, such as data mining, to determine a representative cost driver for haulage activity. This cost driver was subsequently used to trace
Jan 1, 2008
-
Safety Assessment of Dam Failure of Tailings Pond Based on Variable Weight Method: A Case Study in China
By Congcong Chen, Bo Ma
When assessing the safety of a tailings dam, the constant weight method (CWM) is one of the most commonly used methods. However, when the evaluation indicator value suggests serious defects, the evalu
Oct 8, 2022
-
Managing Plant Productivity With A Web Server Technology
By S. Culp, P. Metcalfe
Web technologies and the Internet have revolutionized the computer industry. The Web browser technologies have also moved to portable devices such as Personal Digital Assistants (PDAs) and mobile phon
Jan 1, 2002
-
Environmental Issues: Still Clouded in Uncertainty
By Michael Stanwood
Project feasibility no longer involves just technical and economic viability-today's feasibility study must include environmental, regulatory, and political considerations as well. While the US n
Jan 1, 1981
-
Evaluation Of High-Temperature Disposable Filter Elements In An Experimental Underground Mine
Filtration systems with disposable filter elements (DFEs) are used in the underground coal mining industry to control particulate matter emissions from diesel-powered permissible and nonpermissible co
Jan 1, 2011
-
Pillar Recovery At The Buick Mine
By David E. Nicholas, Steven R. Dismuke, Paul F. Cicchini
The Buick mine, located 195 kilometers (120 miles) southwest of St. Louis in the Viburnum Trend, is owned and operated by Homestake Mining Company. The mine produces lead and zinc ore from a room and
Jan 1, 1986