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Marine Blasting on the New Panama Canal, Pacific Entrance
By Paulo Couceiro, Manuel Lopez Cano, Carlos Rodgriguez Calvo
Apart from its difficult execution, underwater blasting is one of the most critical operations of the blasting techniques; mainly because of the ground vibrations - normally associated with low freque
Jan 1, 2011
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Shock Pressure Transmission Characteristics in a Granitic
By Rakesh Raghavaraju, Bibhu Mohanty
Prediction of fracture and fragmentation characteristics of a rock mass subjected to dynamic loads, such as in blasting remains a major technical challenge. The present study is aimed at characterizin
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Underwater Blast Pressure Monitoring for the Columbia River Channel Improvement Project
By Cathy Aimone-Martin, Kristin Dunlap Kolden
Blasting was conducted for the Army Corps of Engineers (Corps) in the Columbia River near Saint Helens, Oregon during 2009 and 2010 to deepen the navigation channel as a final phase of a dredging proj
Jan 1, 2014
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Design Criteria for In-Situ Mining of Hard Rock Ore Deposits
By M E. Hanson, K Chong, R H. Jacobson, S C. Way
To create conditions for economic rates of mineral recovery in a deep, hard rock mass, enhancement of naturally occurring permeability is necessary, and may be achieved through explosives detonated in
Jan 1, 1983
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Rock-to-Sensor Transmissibility of Vibrations
By L. M. Lopez, J. A. Sanchidrian
This work investigates the performance of some of the measurement techniques used in vibrations from blasting monitoring. Two tri-axial geophones with cases of different size, shape and mass were test
Jan 1, 2014
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Mitigating Oil Disasters Via Underwater Explosive Lensing: A Preliminary Study
By Jason Baird, Philip Mulligan
This report details the preliminary calculations governing the underwater collapse of an oil pipe via explosive lensing. An explosive lens changes the detonation wave produced by an explosive by chang
Jan 1, 2013
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Safety in the Industry: Recent Development in the Classification of Eexplosives Precursors – The Modified Vented Pipe Test
By David Kennedy, Noel Hsu, Miguel Araos
The use of bulk explosive for mining applications started in the 50’s. Since then millions of tons of that material have been transported by road. However during that time, there have been several roa
Jan 1, 2006
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2000 Blasting in the New Millennium - Timely Claims Reporting Can Make A Big Difference
By Steve Dillingham
A blast site incident has just occurred. Tensions are high, and, as the blaster, you’re in charge of the crisis at hand. Your mind is reeling, your thoughts frantic. The main areas of concern for you
Jan 1, 2002
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Strategies for Creating or Rebuilding an ISEE Student Chapter
By C. Kosloski, E. McCullough, A. Fox, S. Reed
This paper serves as a reference guide for creating or strengthening student chapters of the International Society of Explosives Engineers. This includes chapters that are just starting, currently und
Jan 1, 2016
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Considerations in Pre-Split Blasting for Mines and Quarries
By J Lyall Workman, Peter N. Calder
"Presplitting is a technique mines and quarries may use to produce high quality final pitwalls. Damage from backbreak can be minimized, thereby insuring the final pit walls standat the designed angle.
Jan 1, 1993
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Precision Presplitting: Explosive Load Variations with Spacing
By Calvin Konya, Anthony Konya
Presplitting is a form of blasting that when executed properly will create a smooth wall that will minimize secondary conditioning. In recent years, presplitting has become a popular technique to be u
Jan 1, 2017
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Blast Induced Vibrations in Malmberget
By Anders Nordqvist
LKAB operates an underground iron ore mine in Malmberget in the northern part of Sweden. Twelve different orebodies are mined today using both longitudinal and transversal sublevel caving as mining me
Jan 1, 2018
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Varying Stemming Heights Based on the Horizontal Relief Available to Each Hole
By Neal Lee
Reduced relief horizontally means an increase in energy expended vertically into the rock surrounding the stemming column, and potentially through the stemming column. The vast majority of holes in an
Feb 6, 2023
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A Review of Recent Accidents Involving Explosives Transport
By James Rowland, Richard Mainiero
When most people think of explosives transport they think of a hazardous operation. We all know that we aren’t allowed to transport explosives through tunnels and are discouraged from traveling throug
Jan 1, 2008
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Improving Blast Preformance with High Density Toe Loads
By John Floyd, Larry Wardrip
A series of tests were conducted to evaluate the performance of a high density, high velocity cartridged explosive. The tests included two production blasts in a limestone quarry and two production bl
Jan 1, 2002
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Spectral Division Deconvolution of Blast Vibration Signals for Signature Estimation
By Lifeng Li, Jhon Silva-Castro
"Signature Hole Technique is one method to assess the vibration waveform of a production blast.Methematically, it is the convolution between a prior measured waveform of a single blast hole (signature
Jan 1, 2017
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Journal: 100 Years / E.I. du Pont de Nemours Powder Co. Wilmington, Del 1910
By Robert Hopler
INTRODUCTION NOT so very many years ago the farm was about the last place where one would expect to find up-to-date mechanical appliances. Steam, explosives, electricity—the factors which have made th
Jan 1, 2011
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Journal: 100 Years / DRIVING HEADINGS IN ROCK TUNNELS Transactions of the American Institute of Mining Engineers New York 1910
By W. L. Saunders
RBH Note: In the early days of drill & blast tunneling the jobs utilized large crews of drillers and muckers. Advance per round was limited (typically around four feet) but two rounds per 8-hour shift
Jan 1, 2011
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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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Full Emulsion Application Development for Underground Galleries
By Gloria Contreras
The study aims to optimize the density of holes per tunnel section. The energy distribution, the one with the highest density, is used in the center of the diagram and is distributed homogeneously to
Feb 1, 2020