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Fumes from Detonation of Commercial Explosives in Boreholes and Steel Tubes
By Bjorn Engsbraten
Explosive charges have been fired under defined conditions in a closed tunnel. The explosives have either been detonated in a steel tube or a single borehole. In the latter case dimensions, -loading d
Jan 1, 1980
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ANFO’S Behavior in Height-To-Detonation and other Thermal Stimulus Tests
By E. Contestabile, B. von Rosen, P. Lightfoot
As part of an accident investigation ANFO was subjected to various abusive tests. A tractor-trailer carrying 18,000 kg of blasting explosives, caught fire, burned for approximately 30 minutes, and the
Jan 1, 2001
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What Really Is ANFO?
By Jean M. Bouvet, Pierre M. Vuillaume
There is not just one ANFO: ANFO explosive behaviour depends significantly on the blasting conditions and on its physico-chemical characteristics. For instance, ANFO effficiency increases whereas AN p
Jan 1, 1993
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The Changing Economics of Percussion Blast Hole Drilling
By Henry P. Jr Van Ormer
During any blast hole operation the first choice to be made is hole size - it seems simple, just calculate all the factors, spacing, burden, depth, rock characteristics, powder factor, etc. and you ha
Jan 1, 1983
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Journal: USDA’s Wildlife Services Explosive Safety Program “Managing Wildlife Damage”
By Alton Dunaway, Kevin Sullivan, Charles Gray, Doug Hall, Kevin Grant, Kelly Thiel, John Paulson, Bruce Leland, Cole Boyd
Beaver (Castor canadensis) are responsible for economic losses exceeding $4 billion over the last 4 decades in the southeastern United States alone. A large portion of these damages occurs to public r
Jan 1, 2007
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Preconditioning Modeling and Interaction with Explosives in Block Caving
By Ismael Gottreux Vollet, Carlos A. Muñoz Lira, Alejandro Ferrada Vergara
Currently, underground mining of deeper massive deposits with lower grades, harder rock conditions in high strength environments, entails difficulties in caving, fragmentation and seismicity of the or
Jan 1, 2016
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Shaking the Bugs at the Center for Disease Control [CDC]
By Mick Fritz, Ryan Gilmore
The Center for Disease Control [CDC] is in the midst of a twenty year project, part of which includes demolishing existing buildings and erecting taller, more modern structures within the same foundat
Jan 1, 2008
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HDAN and Gasified Emulsion Blends Improving Blasting at Peruvian Mines
By Romel Villanueva L.
"Peru does not produce ammonium nitrate; nevertheless it is a large consumer of both, porous prill (PP) and high-density (HD) varieties. Explosives cost is an important preoccupation in Peru, due tofl
Jan 1, 2016
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A Blasting Efficiency Descriptor "Bed" (for surface blasting)
By Evan Jannoulakis, Wilfrid Comeau
Using the Scaled Distance (SD) and the vector sum Peak Particle Velocity (PPVvs) from a single delay, preferably single blasthole, in a shot, a number is derived which has shown itself to be consisten
Jan 1, 1998
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Structure Responses to a Confined Opening Cut Blast, Sumterville, FL
By Jeff Senules, Oana Meins, Catherine Aimone-Martin, Scott Lanker, Brent Meins
Global wall strains from 4 to 77 micro-strains were measured at three structures adjacent to a highly-confined Florida quarry blast when PPV amplitudes ranged up to 6.05 in/s. Increasing the peak zero
Feb 1, 2020
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Drilling Cost Optimization by Using a Water-Powered Drilling Technique at an Underground Sublevel Stoping Operation
By Alexandra Yuyali
The objective of this research work is to increase the drilling ratio represented in tons per drilled meter (ton/m) to reduce mining costs. One of the key characteristics of this research is the use o
Jan 21, 2025
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The History and Development of Permissible Explosives for Underground Coal Mining (c0bdb26c-921d-4fa8-97b7-a8bd2dbb04d2)
By Robert B. Hopler
The hazards which naturally prevail in underground coal mines, always severe and unpredictable due to the loosely-consolidated strata in which coal is frequently found, are increased by the commonly-o
Jan 1, 1996
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Vibration Control at Long Harbour
By Michael Burrell
This project involved the protection of an historic landfill located on the site. Construction blasting was for a permanent access road to carry traffic to and from a new metal processing plant being
Jan 1, 2012
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Using New Technologies to Achieve Customer Tailored Fragmentation
By Felix Degold, Mark Ganster
Achieving a customer optimized fragmentation by using robust data from new technologies e.g. GPS positions of boreholes, fragmentation analysis to calibrate the geology and fragmentation prediction mo
Feb 1, 2020
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Explosives Casting Technology in Surface Mining
By D E. Shaw, J B. Case, J Gusek
Explosive casting of overburden is defined as the use of explosives in blasting to move overburden to a spoil pile without rehandling. Studies of the economic feasibility of the method, and the formul
Jan 1, 1980
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The Fundamentals of a Good Electronic Initiation System Program
By Thomas Barkley
Until the recent past, blasters have provided good to excellent results with tools and processes that have an inherent error. These errors can be found in drilling, explosives delivery quality and con
Jan 1, 2011
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Protection Techniques for Explosive Demolition of RC Pillar
By Seung-Kyu Baek, Chang-Ha Ryu, Yang-Kyun Kim
Safety concern is one of the most important parameters in the design of building demolition by explosive blasting. Accidents were sometimes reported due to the flying chips of fragmented materials in
Jan 1, 2002
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Blasting on Parliament Hill, Ottowa, Adjacent to Canada's No. 1 Heritage Building
By M V. Van Bers, A L. McAnuff, A Curic
During the Summer of 1997, rock excavation was carried out for construction of the Centre Block Underground Services building (CBUS) abutting the most historically significant structural complex in Ca
Jan 1, 1999
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The Effect of Prill Specifications on Emulsion-ANFO Blends (dfcf65b3-c26f-475a-ba27-2ec8841d710f)
By Greg S. Williams, David L. McDorman, Richard W. Givens
This paper examines the effect of prill size consistency, internal particle density, and oil absorbency on Ammonium Nitrate Fuel Oil (ANFO)-emulsion blends. By analyzing these physical properties of p
Jan 1, 1990
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Recent Projects - Emergency Bridge Blasting
By Brent Blanchard
As most veterans of our industry are aware, explosive demolition by its very nature is often a challenging proposition. Even under the best of circumstances, proper planning and care must be taken dur
Jan 1, 2003