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Effect of Boulder Geometry on Hydraulic Fragmentation using Small Explosive Charges
By Paul Worsey, Richard P. Ayres, Mark F. C. Schmidt
A new alternative technique designed to reduce rock scatter and flyrock during boulder blasting is being developed at UMR. The method uses small explosive charges and is designed for shooting in close
Jan 1, 2000
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Evaluation of Emergent Electronic Detonators and Modern Non-Electric Shocktube Detonators Accuracy
By J Silva Castro, W C. Wedding, B T. Lusk, J Calnan, E G. Morris
The emergence of electronic detonators for use in production mine blasting has enabled mining professionals to rethink the traditional blast design methodologies that pertain to timing. In many ways,
Jan 1, 2012
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Pioneering with Medium Diameter Lifters
By Luke Thornton, Jack Janssen
An unconventional drill pattern is used in an aggregate quarry to reduce pioneering costs. The site is the Iron Mountain Quarry, Granite Falls, WA., an aggregate quarry with an annual production of in
Jan 1, 1997
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Low Cost Raw Materials for Emulsion Explosives Applications
By John Manka
Emulsion explosives consist of an aqueous oxidizer phase, a fuel phase, and an emulsifier. The ability to use lower-cost sources for any of these raw materials presents an obvious economic advantage t
Jan 1, 2003
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Case Study: Iterative Design Process of Presplitting in an Underground Overhand Cut and Fill Mine
By David Porter, Nathan Rouse
The implementation of presplit blasting has been widely utilized in open pit and underground tunneling. This case study works through the iterative process of developing a heading drill and blast desi
Feb 6, 2023
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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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Stope Blast Improvement by a New Blast Design in Leeville Underground Mine
By Miquel Lamadrid, Changshow Sun, Chris Johnson
To reduce blasting overbreak and improve stope stability, several new blast designs were proposed for current and future stopes. Based on the analysis of the powder factor, and the extent of damage zo
Jan 1, 2008
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Innovative Methods of the Use of Explosives and Non-Explosive Demolition Methods in Sensitive Areas; Non-Explosive Demolition Agents to Enhance Profit Margins in Difficult Rock or Concrete Removal Projects
With the ever increasing problems of narrowing profit margins, and increased liability, a solution/option to SEE members is needed. It is essential that all members understand the benefits of utilizin
Jan 1, 1995
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Blast Modification to Improve Bench Width Reliability at the EKATI Fox Pit
By D Anonby
The Fox Pit at EKATI Diamond Mine is designed with 11 m wide benches excavated using a double benching technique leaving 30 m high faces. Blasting tests were conducted to increase the percentage of be
Jan 1, 2007
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Controur Control blasting in Soft Rock Excavation
By W. Jiao, Y. Yongqi, R. Shan
Soft rock mines are distributed through out P.R.C. And drilling and blasting is still the main method of driving a tunnel in these mines. Traditional smooth blasting has been widely and deeply studied
Jan 1, 2000
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Application of the NIOSH-Modified Holmberg-Persson Approach to Perimeter Blast Design
By Chick Kerkering, Stephen Iverson
Perimeter control blasting is common in civil construction projects but not as common in mining. A poorly designed and executed underground mine development blast design can result in unwanted wall ro
Jan 1, 2008
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Tigerwin - a Windows PC Code from Computing Explosives Performance and Thermodynamic Properties
By Per-Anders Persson
TIGERWIN, now on CD, is a user-friendly personal computer code (running under Windows) which determines the detonation and expansion state of an explosive from its known chemical composition. TIGERWIN
Jan 1, 2000
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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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Explosion Hazards and Quantity-Distance Regulations – A Review of their Physical Basis
Currently there exist several explosive quantity-distance (Q-D) rules variously exercised by most countries to protect personnel and property against the effects of accidental explosions. These regula
Jan 1, 2011
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Explosion Hazards and Quantity-Distance Regulations - A Review of their Physical Basis (b24b512b-7da2-4772-bd11-3f3a997ff6c3)
By B Mohanty
Currently there exist several explosive quantity-distance (Q-D) rules variously exercised by most countries to protect personnel and property against the effects of accidental explosions. These regula
Jan 1, 2014
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Auditing Underground Development Drilling and Blasting
By Thomas L. Barkley
My historic auditing of Underground Drilling and Blasting Practices has demonstrated to the author the need for reviews of many mines' procedures in these processes. Poor understanding of the basic pr
Jan 1, 2019
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A Reanalysis of Fragmentation Data from the Red Dog Mine
By Finn Ouchterlony
"Recently detailed fragmentation data from blasts fired with electronic delay detonators (EDDs) in the Red Dog mine in Alaska were presented. They include a comparison with pyrotechnic detonators ford
Jan 1, 2012
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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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Controlled Blasting for Grasberg Slope Optimization
By Allen Kinney, P. T. Freeport
This paper presents the methodology for final wall-controlled blasting utilized at the Grasberg Mine. The resulting optimized slopes representa14%and17% increase to bench face angle (BFA) and inter-ra
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Challenges Related to Near-Field Blasting between Critical Interstate and Railroad Infrastructure
By Luiz Felipe Mendonça de Amorim, Adimir Fernando Rezende, Gustavo Sampaio Lopes, Claudio Cesar Gajardo Arraño, Eltton de Sousa Veras, Manuel Villalobos Calderon
Many technical challenges were encountered while conducting near-field construction blasting between the critical intersection of Interstate 10 and multiple active railroad tracks in El Paso, Texas, f
Jan 1, 2019