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Dynamic Stress Field around a Blast Hole – A Laboratory Study
By R. Raghavaraju
Estimation of the dynamic stress field in terms of its amplitude and decay around a blast hole is a key input parameter in all numerical modeling and blast prediction exercises. However, there is very
Jan 1, 2014
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A Method to Calculate the Dynamic Strain Tensor from Blast Vibration Records - Theory and Measurement Error Analysis
By Ruilin Yang
"Blast vibrations are essentially a strain/stress wave propagating in rock or structures inthe vicinity of a blast. However, blast vibration has always been quantified in terms ofpeak particle velocit
Jan 1, 2012
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Coal Loss Due to Cast Blasting--Implication on Mine Economics
By Sarma S. Kanchibotla
In overburden cast blasting the explosive energy is used to move a significant percentage of overburden from the high wall to the spoil pile thus reducing the amount of material to be handled by machi
Jan 1, 1999
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Automation of Drill and Blast - Measurement Techniques to Develop Standard Procedures
By Ewan Selers, Gary Cavanough
Drilling automation technology is well advanced and automated drill rigs are in use at a number of operating mines. This is not the case for the other drill and blast processes due to significant tech
Jan 1, 2016
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Testing a Crisis Management System via the Simulation of a Bulk Emulsion Truck Fire - Learning Through Collaboration
By Rob Farnfield, Ben Williams, Ashley Haslett, Diane Cartledge
Major accidents that occur within our industry are often tragic and expensive, damaging reputation and threaten the livelihood of the business. There isn’t anything in them that can be seen as positiv
Jan 1, 2016
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Field Applications and Quantification of Electronic Detonator Technology (f6aba4f2-0ecc-4a09-a9b0-132d9c5ded54)
By Douglas Bartley, Brian Wingfield, Robert McClure
Recent studies and limited tests indicate favorable results utilizing high accuracy electronic detonator technology over conventional non-electric pyrotechnic systems. This study discusses the applica
Jan 1, 2000
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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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A Preliminary Study into the Relationship between Air Overpressure and Face Velocity in quarry Blasting
By W. J. Birch, R. Farnfield, L. Bermingham
Whilst a significant body of research has been carried into air overpressure levels that arise as a result of the use of explosives, few published studies have actually tried to relate the movement of
Jan 1, 2008
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Prediction of Detonation Parameters
By P D. Katsabanis
"This chapter describes the principles for the derivation of the equations for a detonation wave.. Theimportance of the equation of state for the detonation products is demonstrated and commonly used
Jan 1, 1992
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Trench Blasting Guidelines & Pitfalls
By Vic Sterner
As cities and towns continue to grow, the need to install sewer, water, gas and other utilities becomes a necessity and the blasting of trenches for these service lines probably constitutes one of the
Jan 1, 2004
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Full-Field Deformation Measurements Under Explosive Loading Conditions Using Multi-Image Pattern Analysis
By Xing Zhao, Michael A. Sutton, Vikrant Tiwari, Damien Bretall, Xiaomin Deng, William L. Fourney, Uli Leiste
The dynamic response of a thin aluminum plate subjected to both shallow and deeper buried blast loading was studied. Using a combination of high speed stereo-vision and three dimensional digital image
Jan 1, 2010
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Hydtro-Fracturing Technology for Secondary Rock Breaking
By Don McCarthy
Modern mining has been dominated by the drill-and-blast method for more than a century. There have been steady improvements in drilling technology, explosive products, methods of initiation and integr
Jan 1, 1998
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The Analysis of Blast Vibration Data - What is the Current State of the Art?
By Randall M. Wheeler
Many of us have used a seismograph to measure peak particle velocity and frequency. But do we really understand why? Also, why do we measure particle velocity instead of displacement and/or accelerati
Jan 1, 1997
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Blasting a Tunnel Through Folsom Dam
By Gregg A. Scott, Gordon F. Revey
"The Folsom Dam is a 340-foot-high concrete gravity dam with embankment wing dams located on the American River about 20 miles northeast of Sacramento, California. Folsom Dam is operated andmaintained
Jan 1, 1999
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Blasting Effects on the Grindability of Rocks
By C. Pelley, S. Kelebek, P. D. Katsabanish, M. Pollanen
A series of small scale tests have been conducted to evaluate the effect of blasting on the grinding resistance of rocks. The samples consisted of homogeneous blocks of granodiorite and limestone whil
Jan 1, 2004
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Security and Control (476c288e-1831-4c21-a747-ee41961667e9)
By Jim Mikelait
Overview ?? Why do we need security? ?? Needs assessment ?? Elements to any security system ?? Protect, Detect, Alert, esponse ?? Electronic Security System Criteria ?? Advantages and Limitations of
Jan 1, 2006
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The Non-Deal Detonation
By Eric Dussell
Commercial or industrial explosives are mechanically-mixed, fuel-oxidizer composites which exhibit varying degrees of non-ideal behavior. Non-ideality results from a relatively slow and state-insensit
Jan 1, 1997
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Choosing the Right Delay Timing for the Blasting Application, Optimization and Maintaining Field Controls
Choosing the correct delay time for many blasting applications is an important and critical blast design parameter for controlling fragmentation, muckpile shape, swell, digability, throw, ground vibra
Jan 1, 1998
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Improved Blasting Using Low Density Ammonium Nitrate Prills; Improved Fragmentation via the Use of Blast Controls Plans
By Ron Frye, Carl Liibbe, Wayne Curtis, Julie Pecori, Dan Leach
Test work comparing the performance of a Low Density Porous Ammonium Nitrate Prill to regular Porous Ammonium Nitrate conducted in Pennsylvania and New York showed that less ammonium nitrate was requi
Jan 1, 1997
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Dutch Harbor, Alaska Unisea Quarry – Using Near Field Vibration Measurements to Improve Blasting Results Close to Structures
By Mike Cammack, Logan Huppert, Gustavo Azpilcueta
During the summer of 2015, Unisea Inc. sought proposals for the G1 Dock Replacement Project in Dutch Harbor, Alaska. It would be a one year project and construction was scheduled to begin in the sprin
Jan 1, 2018