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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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Presplit Assessment by Signature Hole Blast Vibration with Accelerometer Measurement
By Remi Proulx, Ruilin Yang
The effectiveness of presplit in soft or fractured ground is hard to visualize or quantify. There have been many attempts by the blasting community to measure and quantify the effectiveness of prespli
Jan 1, 2019
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Acoustic Response of Structures to Blasting
By Braden Lusk
This paper includes results from analysis of recorded Acoustic Responses of Structures to Blasting. The analysis was performed to determine specific characteristics of sounds experienced inside homes
Jan 1, 2009
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Floor Blasting for Establishment of a New Crusher in Underground Limestone Mine
By Chris Searing
An underground room-and-pillar limestone mine in Western Missouri acquired a new primary crusher, physically larger in every dimension than the unit it replaced. Due to the space constraints within th
Feb 6, 2023
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Rock Specific Breakage Energy Functions Derived from Lab Scale Blast Experiments
By Peter Moser, Andreas Grasedieck
In modern rock blasting it is becoming more and more important to achieve a certain specified fragmentation. This means that the rock particles formed as a result of the blast should conform to a desi
Jan 1, 2004
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An Overview of the Effect of Soil Properties on Explosive Cratering
By Denis Rickman, Jon Windham, Stephen Akers, Byron Armstrong
The soil crater formed by detonation of an explosive charge is of considerable military interest because of the common use of explosives to create soil obstacles. The soil crater is also an important
Jan 1, 2010
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Determination of Blast Vibration Limits by Direct Strain Measurement
By Adrian Moore, Alan Richards, Andrew Brodbeck
Structural blast vibration limits should be based on the strength of the structure, the stress induced by blasting, and a responsible factor of safety. In this paper a methodology that uses direct str
Feb 1, 2020
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A Study on the Attenuation Characteristics of Electronic Blasting Vibrations for Different Types Blast Designs According to Korean Open-Pit Blasting Standards for Proposing the Blast Vibration Equation
By Park Yun-Seok, Jung Seung-Won, Hwang Nam-Sun, Song Jin-hyuk, Kim Young-ho
This study proposes a new blasting vibration estimation formula that reflects the vibration reduction characteristics of electronic detonators, which are not considered in the current MOLIT blasting v
Jan 21, 2025
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Determining The Dynamic Response of Geologic Bodies Through Split-Hopkinson Bar Compression Testing for Blasting Applications
By Dr. Zach Agioutantis, Elliott Morgan
The explosives, mining, and heavy civil industries consistently battle the uncertainty that is associated with working with a heterogenous medium like rock in blasting. This has led to studies to incr
Jan 21, 2025
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Trim Blasting Designs in the Morenci Mine
By Karl Christopherson, Vanessa de Viterbo
Trim blasting is an integral part of the mining processes at the Morenci Mine, a Freeport-McMoRan Copper & Gold Inc. property. Trim blasting near high-walls or Finals blasting requires a tighter distr
Jan 1, 2011
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Geologic Considerations in Blasting
By Michael Laing
"Geology plays a critical role in many aspects of blasting, from fragmentation to wall control. One often overlooked component of blasting concerns blast results due to the effect of geologic features
Jan 1, 2016
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Threshold Shock Initiation Parameters of Liquid Phase Ammonium Nitrate
By Allan King
Ammonium Nitrate (AN) is most commonly encountered as either a prilled solid or a highly concentrated aqueous solution, with or without organic ( e.g amine) nitrates. Under certain conditions of fire
Jan 1, 2008
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Creating Micro Fractures in Rock Fragments for Blasting Efficiency Improvement
By S. Green, R. Yang
Blasting is a commonly used method for rock fragmentation in mining operations for mineral extraction. It involves breaking the rock mass into small pieces, and ideally creating micro fractures within
Jan 1, 2024
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Baseline Corrections for Mining Blast Vibrations
By Jhon J. Silva Castro
Blast vibration records used in mining contain unwanted information in the form of noise due to long-period drifts, background noise, and noise due to the conversion of the analogue signal to a digita
Jan 1, 2015
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New Safety Fuse using NO3Na+C+S as its Formulation
By Jesús V. Saccsa, Kenji B. Loayza, Erick M. Condori, Jorge A. Velásquez
This research investigates how to reduce manufacturing costs of a safety fuse composed of black powder, replacing its ingredient NO3K by NO3Na for processing, and contributing to minimize costs per bl
Jan 1, 2017
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Measurement of the In-Hole Density of Gassed Explosives at Peruvian Mines
By Romel Villanueva, Juan Vasquez
We present the results of our field research on the variation of the density of the gassed explosives and their influence on the blasting results in the Peruvian mines: Yanacocha, Toquepala and Antami
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Blasting for Installation of one of the World’s Largest In-Pit Crushers at an Open Cut Copper Mine
By S. Mansfield, A. Sharma
At a large open cut copper mine, in pit crushing and conveying is used to shorten haul routes and minimise stockpiling of ore. This strategy decreases capital expenditure by reducing the number of hau
Jan 1, 2024
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Overcoming Emulsion Destabilization Caused by Common Contaminants
By Ian Tolliday
Emulsion Explosives manufacturers are aware of the destabilizing effect that the presence of inorganic impurities such as magnesium and iron and organic impurities such as naphthalene sulfonates and a
Jan 1, 2018
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Small Scale Model Testing in Investigations of Energetic Material -- Dynamic Effects Laboratory
By L C. Taylor
Very small scale testing has been shown to be able to predict quite accurately, in many situations, the results of full scale testing. Small scale tests are more cost efficient, easily observed, and e
Jan 1, 2012
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Measured Results of the Influence of a Large-Scale Fault on Blasting Vibrations in Sublevel Open Stoping
Existing geological structures such as faults or shear zones can greatly influence the interpretations of amplitude or energy attenuations of measured blasting vibrations along both affected and unaff
Jan 1, 2011