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Blast Desification Techniques (An Operator's Guide)
By Patrick D. McLaughlin, C Fordham
"The project outlined in the accompanying paper was to densify beach sands on the pond side ofa tailings dyke to the strength required for future dyke construction, This was to be achievedthrough the
Jan 1, 1992
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Study of the Effects on Shaped Charge Liner Design
By S. M. Geerts, M. T. Wild
In this paper the performance effects of various shaped charge liner designs will be discussed. Several different charges will be tested and the liner design will be reviewed based on the performance
Jan 1, 2010
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What You Always Wanted to Know About Blast Waves in Blocky Benches
By Hans-Peter Rossmanith
Fracture mechanics (Atkinson 1987, Broek 1988, Rossmanith 1978-2002, 1983, 1997, Kanninen & Popelar 1985) and wave propagation (Graf 1975, Rinehart 1975) form the main ingredients in the new electroni
Jan 1, 2004
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Controlling Fragmentation and Ground Vibrations at Owensville Quarry
By Rachel Bauer, Jacob Henderson, Dr. Catherine Johnson
Capital Quarries in Owensville, Missouri faces several challenges when designing a blast that allows for ease of movement while maintaining controlled throw and compliant air over pressure. The primar
Feb 6, 2023
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Paper or Electronic Records – Ways to Improve Blast Documentation and Recordkeeping
By Travis A. Davidson, Ralph E. Burnham, Cathy Aimone-Martin, J. Kelly Ratliff
Blasters face a long list of tasks to execute daily—from vehicle inspections to blast design and layout, hole loading and tie-in, securing the site, and finally, safely executing the blast. Good pract
Jan 21, 2025
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Detection of Geological Features using Aerial Image Analysis and Machine Learning
By Ankit Jha, Sudarshan Rajagopal, Purushotham Tukkaraja
Geologic structures are one of the crucial parameters in blast design. Structural geology and rock properties influence drilling patterns, blast layout, and initiation systems. A comprehensive underst
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Limitations of using PPV Damage Models to Predict Rock Mass Damage
By Jianping Li, Ernesto Villaescusa, Kelly Fleetwood
During blasting, stress waves propagate through a rock mass, inducing stress and strain changes. This applied deformation affects intact rock, existing discontinuities, mine excavations, and engineere
Jan 1, 2009
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Powder Factor Analysis of Quarry Blasts Through the Fragmentation-Energy Fan Concept
By Ian Bell
This paper investigates fragmentation in an aggregate quarry using the fragmentation-energy fan concept. Six blasts were monitored, located one behind the other in the same quarry area. The rock struc
Jan 1, 2019
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The Right Tool for the Job
By Eric Kelley
Having been retained as a legal expert for the fatality at the Canberra, Australia project, it made me aware of how good intended blasters profess to be implosion experts. Owners and contractors can b
Jan 1, 1999
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Impact of Open-pit Blasting on the Stability of Adjoining Multiseam Workings of Underground Coal Mine
By Ajoy Singh
A study was conducted to investigate the damage potential to underground multi-seam openings caused due to vibration generated by open-pit coal mine blasting. The objective was to recommend optimal ex
Jan 1, 2012
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The Fragmentation-energy Fan, a Universal Behavior of Blasted Rock?
By Peter Moser, Finn Ouchterlony, José A. Sanchidrián
"Blast fragmentation data in the form of percentile fragment sizes as function of specific charge oftenform a set of straight lines in log(size)-log(energy) space that tend to converge on a common foc
Jan 1, 2017
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Modern Blasting Practices in Brazil
By Benedicto Hadad Cintra
In an inflationary environment the need for reduced cost is a daily concern of all industries. The Du Pont do Brasil "Expanded Pattern" method has proven to be an extremely effective means of reducing
Jan 1, 1985
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Blasting Overhangs Close to a Vibration Sensitive Structure
By R. Franfield
This paper describes a situation that many drilling and blasting contractors have found themselves in – a client?s fear of the use of explosives. In the summer of 2007 Blasting Services Ltd was asked
Jan 1, 2009
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Electronic Detonator and Initiation Systems - Implications of the Dominant Design for Widespread Acceptance and Sales of this 'New' Technology
By Steve Brace
Electronic detonators have been commercially available to the mining industry worldwide for over ten years. It is estimated that total cumulative global sales will have reached 25 million units by the
Jan 1, 2004
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Vibration Effects on Underground Concrete Structures
By Frederick Kuhnow
In open pit blasting, energy is released and transmitted through the geology. Negative effects can impact operations and can affect mine production. This paper presents recommendations for blast desig
Jan 1, 2014
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The Role of Stress Waves and Fracture Mechanics in Fragmentation (365338ef-2790-4b50-a1d1-180b1215f11d)
This paper will review some of the work conducted in the past at the Dynamic Effects Laboratory to examine the use of stress waves and fracture mechanics in understanding dynamic fracture and fragment
Jan 1, 2015
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The Application of Likelihood Ratio Test to Blast Vibration Analysis
By W. J. Birch
The dedicated documenting of blast design and vibration monitoring results forms part of the best practice methodology for today’s blasting operators. This allows regression curves to be constantly up
Jan 1, 2004
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Risk Management in Blasting: Lessons Learned the Hard Way
By Ralph E. Burnham, Jeff Taylor, Jonson Montgomery, J. Kelly Ratliff, Rennie Montgomery, Martin Brashear
Top priorities for all blasting companies and individual blasters are risk management, safety of company personnel and the general public, regulatory compliance, and liability protection. On a daily b
Jan 1, 2018
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Modeling Ground Motion in 3D Geologic Media from Fragmentation Explosions: Preliminary Results
By Donald Thompson, Jessie Bonner, Ileana Tibuleac
Predicting ground motion from complicated mining explosions is important for mines developing blasting programs in regions where vibrations must be kept below certain levels. Additionally, predicting
Jan 1, 2005
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Methods to Quantify Drilling Accuracy
By Tristan Worsey, Nathan Rouse, Kyle Hall
Drilling accuracy is the foundation to any successful blast operation. Even the best blasting practices cannot overcome poor drilling and still obtain desired results. Inaccuracies in boreholes can re
Jan 1, 2018