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Large Arena Test Simulator Using Small High Explosive Charges.
By Paul Worsey, Larry Frost, Braden Lusk, Seok Bin Lim
For certification of blast resistant windows, current tests consist of arena tests or large air gun tests. Arena tests involve the detonation of more than 1000 pounds of explosives with windows placed
Jan 1, 2006
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Deep water excavation with shaped charges: a case history in Lake Mead, Boulder City, Nevada, USA
By Roberto Folchi, Hans Wallin
Lake Mead, the largest man-made reservoir in the United States, is located about 30 miles southeast of Las Vegas, Nevada. For the construction of Lake Mead third water intake, which is entirely placed
Jan 1, 2012
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Running a Drill Program that Supports the Mission of Blasting
By William D. Hissem
While much technology has been developed and brought to bear in the area of blasting applications, the foundation work required for success in the muck pile begins with the drilling program.
Jan 1, 1997
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Rapid Chemical Destruction of Explosives in Various Materials by MuniRem®
By Charolett Hayes, A. L. Russell, Anthony J. Bednar, Jared Smith, Valentine A. Nzengung, Stephen L. Pilcher
The manufacture of Energetics Materials (EM), including maintenance and demilitarization of munitions causes dangerously high levels of explosives residues to be harbored in building features. The two
Jan 1, 2016
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Garbage Plug Demolition Using a Low Detonation Velocity Explosive in “Presa Mixcoac” Dam, in Mexico City
By Enrique Albarrán, Julian Hernández
"In 1942 The “Presa Mixcoac” dam was built, along with 15 other dams, to control the rain fall waterin the mountains west of Mexico City. Mexico City’s population at that time was around 1.5 millionpe
Jan 1, 2016
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A Case Study Applying the Multiple Blasthole Fragmentation Model (MBF) at an Open Pit Mine
By C. McAllister, D. Preece, J. Berendzen
The Multiple Blasthole Fragmentation (MBF) model was developed recently and has been reported in previous papers. The MBF model accepts inputs from the blast design, such as: location and orientation
Jan 1, 2016
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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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Concepts and Case Study for Regular Rhythmic Timing and Sequence
By Neal Lee, Braden T. Lusk, Jhon Silva-Castro, Patrick J. Jenks
"Timing and charge sequence are very important for optimized blast design. Traditional nonelectricinitiation systems have moved the industry toward a system of delays consisting of hole-to-hole androw
Jan 1, 2016
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Design and Testing of Blast Shields for Different Blasting Applications
By Eduardo Lozano, Vilem Petr
The use of explosives bring countless benefits to our everyday lives in areas such as mining, oil and gas exploration, demolition or avalanche control. However, because of the potential destructive po
Jan 1, 2015
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Top Hammer Drilling-The Way Things Work
By William D. Hissem
For those blasthole applications which require the use of holes ranging from 1” to 5.5” in diameter, the use of top hammer drills has been the equipment of choice for several generations of drillers.
Jan 1, 1998
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Effects of Electronic Detonators in Underground Tunneling Applications
By Charles Zdazinsky
Over-break is undesirable in underground civil construction because it excessively damages rock along the perimeter of the tunnel, which directly influences the cycle times of advancement. A quicker c
Jan 1, 2015
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Application of New Technologies for PSD Data Acquisition
By J. Pizarro
Any organization that subjects its activities to a continuous improvement methodology, aiming to optimize their processes and services, must be able to adequately measure the results of the implemente
Jan 1, 2024
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New Blasting Techniques to Eliminate Subgrade Drilling, Improve Fragmentation, Reduce Explosive Consumption and Lower Ground Vibrations
By R. Frank Chiappetta
A new blasting technique has been developed by International Technologies, LLC. to eliminate subgrade drilling, lower ground vibrations, improve fragmentation and reduce explosive consumption. The new
Jan 1, 2004
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Improving Safety of Drill Steel Diameter Changes on Rotary Drills
By Zach Ellis, Dusty Fisher
The Office of Surface Mining, Reclamation, and Enforcement (OSM) cited a large surface coal mine for a series of flyrock incidents that occurred when blasting close to the mining lease perimeter. The
Jan 1, 2015
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MEMS Accelerometers in Blast Induced Shock and Vibration Monitoring
By W. J. Birch, R. Farnfield, S. Hosein, C. Johnson
Modern smart phones include accelerometers based on MEMS (Micro Electro Mechanical System) technology giving the possibility to measure both acceleration and orientation. The widespread use of such ph
Feb 6, 2023
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Effect of Explosive Type on Particle Velocity Criteria in Ground Vibration
By SMF Hossaini
With the aim of a clearer understanding of the applicability of existing empirical equations for blast induced ground vibration, an investigation has been conducted on three mostly applied forms of su
Jan 1, 2004
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Analysis of Rock Fragmentation by Blasting Using Combined CFD/FEZ/DEM Models
By Alejandro Ferrada Vergara, Héctor Espinoza Muñoz
Drilling and blasting stages are considered factors that impact downstream processes significantly and over all the mining business value chain. Adequate control of these processes may represent energ
Jan 1, 2016
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Pressures on Targets from Buried Explosions
By L C. Taylor, H U. Lesiste
This is a preliminary study of the statistical variation of the pressures on a target above a buried explosion. The data were taken at various distances from the charge centerline for three heights of
Jan 1, 2010
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Wireless Electronic Blasting
By Daniel Mallette, Richard Goodridge, C M. Lownds
Despite a world of mobile devices that has many of us taking the ability to communicate wirelessly for granted, an in-hole wireless initiation system was thought to be not viable. The known and common
Jan 1, 2016
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Predictability of a High Explosives Shock Tube for Testing Blast Resistant Windows
By Braden T. Lusk, Shannon P. Lusk, Kyle A. Perry
A high explosives shock tube has been constructed and developed to test blast resistant windows with pressure versus time waveforms similar to waveforms generated by arena testing. Calibration of the
Jan 1, 2010