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Achieving Non-Duplicated Firing Times in Multipledeck Priming of Individual Blast Holes in Surface Coal Mining Using Non-Electric Down-the-Hole Primers and Electric Surface Initiation
By James Ludwiczak
We are coming to an end of an era in Midwest surface coal mining. For many years, large tracts of coal lands were readily available for sale or lease to surface mine operators.
Jan 1, 1980
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Electric Explosive Tube Initiation System
By Richard N. Snyder
In this system for connecting blasting caps to the initiation source, the need for a redundant design structure provides more reliable method of explosive initiation. This is accomplished by using a c
Jan 1, 1995
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Journal: The Agricultural Blaster E.I. duPont de Nemours Powder Co. Wilmington, Delaware May, 1912. Practical Advice from a Successful Blaster.
By Robert Hopler
Complying with our request in the February issue of the AGRICULTURAL BLASTER for items that would be of interest to other blasters, Mr. Thomas H. Benton of Tennessee sends us an article in which his m
Jan 1, 2013
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Innovative Drilling and Blasting Practice at a Major Underground Mine Development Project in Canada
By Jacques Monette, P K. O'Connell, Keith Boyle
The mine contracting industry in Canada is no different from any other industry in its quest for productivity improvements. Dynatec Mining Ltd. has focused on drilling and blasting of rounds as an are
Jan 1, 1994
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Explosive Engineering Problems from Fragmentation Tests in Oil Shale at the Anvil Points Mine, Colorado
By Chapman Young, William L. Fourney, Richard D. Dick
During 1981 and 1982, an extensive oil shale fragmentation research program was conducted at the Anvil Points Mine near Rifle, Colorado. The primary goals were to investigate factors involved for adeq
Jan 1, 1985
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Improved Stability Through Optimized Rock Blasting
By R Holmberg, C Sjoberg, B Larsson
This paper describes the excavation of an underground naphta storage facility at Stenungsund in Sweden. The main purpose with this paper is to give an overall view of how the excavation was carried ou
Jan 1, 1984
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Development of the Wireless Initiating System Using Microwave Power
By Masanobu Morita, Koichi Kurokana, Kenji Hashimoto, Yoji Tasaki, Yukio Iida
"It has been the long desire of blasting engineer to realize the automatization of tunnelblasting to improve the safety and efficiency. As for bore hole drilling, the automatizationhas been achieved b
Jan 1, 1993
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A Review of Blasting Accidents in Surface Mining
By Richard W. Watson, Julius Roth
The Bureau of Mines has recently completed a contract study of the hazards associated with surface mining.! Part of this effort involved an analysis of surface mining accidents associated with blastin
Jan 1, 1978
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Constructing a Decline Truck Entrance Tunnel Into Rock Reserves Located Beneath a College Campus
By David R. Holberg
In the Kansas City metropolitan area, mineable Bethany Falls Limestone occurs 80 ft below river level under the 700 acre Park College Campus on the north bank of the Missouri River at Parkville. For 2
Jan 1, 1997
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Small-Scale Crater Tests in Weak Concrete and Sand
By T Weaver, R Dick, R Sivakumar, C T. Aimone
A series of small-scale crater tests were performed in concrete and sand in an effort to understand the cratering process in large-scale field blasts. The surface orientation of these tests varied fro
Jan 1, 1986
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Post-Blast Generation of Explosive Gases in Large Diameter Non-Breakthrough Bore Holes
By R W. Bellenie, P N. Blakey
The phenomena of post detonation gases in muckpiles is reasonably well known. It causes the 'rumbling' noises occasionally heard after a blast in open pits or quarries and is thought to occur due to i
Jan 1, 1980
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Blast Fragmentation Size Analysis Techniques and Application Experience
By Malcolm Scoble, Yves Lizotte, Ajit Singh
Fragmentation size assessment faces difficult problems, traditionally involving tedious and time consuming procedures. Early work had been directed towards developing empirical methods of predicting r
Jan 1, 1990
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Electronic Detonators - Do They Add Value?
By TA Louw, Dr CM Lownds
In an era where profits are constantly being eroded, mines are looking towards technology developments to assist them in solving mining problems and reducing mining costs. An emerging technology that
Jan 1, 2004
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In-situ Fracture Stimulation: A State of the Art Review
By Mario Karfakis, G. Langlois
Well stimulation is the process by which any production well, whether for production (extraction), storage (injection) or deep interaction (remediation, monitoring, etc) can be made or stimulated to f
Jan 1, 2009
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Numerical Simulation of Fragmentation During the Throw Stage of Blasting
By C H. Ryu
This paper presents a simplified two-dimensional numerical model of block fragmentation in a Jointed rock mass during the late or throw stage of a blast after wave effects have subsided. The model is
Jan 1, 1986
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Experimental Techniques To Reduce Blast Vibration Level, Tourah, Cairo, Egypt.
By Abdel Rahman, M. Khaled, Abo Makarem
There are four large limestone quarries, located nearby Cairo metropolitan. Drilling and blasting operations are used to extract limestone for the cement industries. In these quarries, the blast vibra
Jan 1, 2007
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Study on System of Fracturing Rock Result from Dynamic Water Pressure by Explosion
By Qingshou Chen, Gongbo Li, Hengqian Ran
A method for safe fracture of rock, concrete and other brittle solid material using dynamic water pressure by explosion is provided. The propagation of the pressure is studied with Allievi water hamme
Jan 1, 2000
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Geophysical Exploration, Blasting Parameters, and Fragmentation in Quarries
By Ivan Kovac, Pero Marjanovic, Branko Bozic
"The paper deals with results of geophysical survey of the rock masses, and the blasting parameterswhich have effect on the fragmentation in quarries . A relationship between the burden, which is the
Jan 1, 1999
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Backstoping with Millisecond Delay Timing at the Sunshine Mine, Kellogg, Idaho
By Dale Nies
In the past, cap and fuse has been the only economical and efficient initiation system capable of providing sequential timing, ease of loading and hookup, and unlimited borehole number for backstope r
Jan 1, 1989
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48 Inch Production Blast Holes in Oilsands
By Michael McDougall
"Suncor Inc. Oilsands Group, Mining Operation in Northern Alberta, Canada, has beenblasting to loosen the oilsands to increase production and decrease maintenance of the hugebucketwheel excavators for
Jan 1, 1993