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The Influence of Time Error of Electric Detonators on the Amplitude of Vibration Generated by Blasting
By Kis M
The purpose of seismic control of blasting is to indicate the vibration magnitude or to eliminate the occurrence of vibration damage caused by blasting. At the Mining Research Institute in Hungary, a
Jan 1, 1979
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Diamonds are a Driller's Best Friend
By Langdon T. Mitchell, Karl Ingmarsson
The title is not referring to jewelry; nor is it about diamond core drilling. This article is instead about an emerging application for diamonds, hard rock percussive drilling with diamond drill bits.
Jan 1, 1999
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A Blaster Complies with Department of Transportation Regulations
By Donald H. Matthews
I wish to preface my remarks with the warning that I, in no way profess to be an authority on the U. S. Department of Transportation, Hazardous Materials Regulations, 49CFR Parts 100-199, nor attempt
Jan 1, 1977
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The Engineering Significance of Shrinkage and Swelling Soils in Blast Damage Investigations
By Wendell W. Harris, Stanley J. Vitton
In the United States each year it has been estimated that expansive soils cause approximately $9.0 billion in damage to buildings, roads, airports, and other facilities. This figure alone exceeds the
Jan 1, 1996
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The Effects of Run-up on an Explosively Formed Projectile
By Jason Baird, Joshua Hoffman, Phillip Mulligan
The purpose of this report is to address the method of reducing the overall explosive weight of Explosively Formed Projectiles (EFPs) while still achieving satisfactory performance. This reduction is
Jan 1, 2010
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Blast Vibration Predictions, Damage Assessment and Vibration Monitoring for a Medical Center Expansion
By D. Lee Petersen, Travis Davidsavor
The 2003-2004 expansion of a Duluth medical center required rock blasting adjacent to the existing structures, a Mn/DOT retaining wall and other urban structures. This case history describes the metho
Jan 1, 2010
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Limestone Fragmentation Case Study Using Regular Rhythmic Timing
By Tristan Worsey, Jhon Silva
The paper discusses a limestone quarry case study that looks at change in fragmentation due to using different charge sequences when using the regular rhythmic timing method.
Feb 1, 2020
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A Consumer's Guide to Bulk Emulsions and Emulsion/ANFO Blends
By Catharine L. VanOmmeren
Emulsion quality characteristics such as shelf life, handling, and sensitivity are critical to the end-user. It is therefore important that the consumer be prepared to ask his supplier specific questi
Jan 1, 1989
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Predicting Vibration Through Linear-Regression Modelling
By Anthony Konya, Calvin J. Konya
The publication, RI8507, from the U.S. Bureau of Mines established an envelope equation that related scaled-distance to peak particle velocity in an attempt to predict ground vibration in the design p
Jan 1, 2018
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A Mid-Town Crash
By Virgil L. Lewis
On September 7, 1994, a Burlington Northern coal train crashed into a parked train in the downtown Gillette, Wyoming rail yard. I would like to address two issues in regards to this accident. One, a s
Jan 1, 1996
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How Complexity Analysis contributes to blasting practice
By Marilena Cardu, Mauricio Dompiri, Jacopo Seccatore
Blasting in geological bodies is an industrial process acting in an environment characterized by high uncertainties (natural joints, faults, voids, abrupt structural changes), which are transposed int
Jan 1, 2011
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The Demolition of Genoa's Silos, An Example of Synergy
By Amanda Verno, Danilo Coppe, Andrea Reggiani, Adolfo Bacci
The methodological example that comes from the demolition of the Genoa grain silos, should not been considered as an auto-celebration of a difficult project successfully executed, but should serve as
Jan 1, 2005
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Slurry Technology in the USSR
By Serge V. Krasvin
The excavation of large amounts of ferrous and non ferrous metals, coal, shale, and other minerals - requires intensification of blasting techniques. In the late 80s in the USSR, the annual consumptio
Jan 1, 1992
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Carbon Monoxide Poisoning – Commercial Explosives, Rock Blasting and Construction Work in Inhabited Areas
By Nadya Michel, Daniel Gros-Jean
This is a true story. Names have been changed to illustrate the importance and impact of carbon monoxide risk management in explosive blast projects and the community « Honey I’m not feeling good…” “W
Feb 6, 2023
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HDAN Emulsion Blend Implementation Results in Open Pit Coal Mine
By J. P. Remi Proulx, Juan Camilo Gonzalez T., Winston B. Wilches
Alabama USA based Drummond Ltd. operates two open pit mines in the Cesar Coal Basin of Northern Colombia. The mines produce a combined total of over 25 million tons (22.7 Mt) of thermal coal per year
Jan 1, 2015
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A Review of Rock Slope Development with Explosives Since the 1960's
By Harry L. Siebert
Pre-splitting was substituted for line drilling to achieve stable rock slopes and reduce excavation beyond the pay line on a Connecticut highway project in 1962-63. Changes have occurred in developing
Jan 1, 1998
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Burden and Spacing Effect on Underground Limestone Fragmentation using Quantitative 3D Modeling
By Mark Spaniel
Computer 3D modeling to evaluate the potential underground blasting fragmentation performance based on rock within calculated damage radii along drillholes, as well as the burden distance from explosi
Feb 1, 2020
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Effect of delay time on stress induced damage and fragmentation: An analysis of the findings of small scale tests using observations of free face movement and calculations
By N Gkikizas-Lampropoulis
Selection of delay times to optimize fragmentation has been a controversial topic among researchers and blasting practitioners. This paper interprets previous experimental information on the effect of
Jan 1, 2016
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Permitted Explosives Research work in Australia
By Duncan Chalmers, Rob Nowell, Miguel Araos
Australian underground mines produce in excess of 60 mtpa of coal. Most of these use the longwall method, and they require the use permitted explosives (which are called “permissible” in other countri
Jan 21, 2025
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Blasting Techniques for Pit Wall Control at Inco Limited's Thompson Open Pit
By Nan Lee, Stephen H. Chung, Peter Lienberger
INCO Limited's Thompson Open Pit has researched extensively into improved blasting techniques towards increased productivity as well as optimum pit wall protection. Blasting with excessive amounts of
Jan 1, 1992