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Fines Reduction and Its Impact on the Economics of Aggregate Operations
By J. Eloranta
"Previous work indicated that the annual per-capita consumption of raw aggregate material averages about 10 tons; half of which is produced by blasting. Given a population of approximately 320 million
Jan 1, 2017
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Data-driven improvement of active rockburst prevention - case study from Polish underground copper mines
By M. Szumny, P. Mertuszka, K. Fuławka
Multi-face destress blasting is the basic method of reducing rock bursts hazard in Polish copper mines. Blasting operations of this type are carried out regularly, twice a day in order to minimize the
Jan 1, 2024
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Development of Scaled Damage Criteria for Blasting
By Jorge Alvarez
In a large-scale open-pit mining operation, continuous efforts are made to control damage to the slope walls. An essential tool in this effort is determining the PPVc (critical peak particle velocity)
Jan 21, 2025
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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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Development of a new contour blasting system using bulk emulsions
By Peter Moser, Mark Ganster, Radoslava Ivanova, Florian Bauer
Blasting accurately in underground drifts and creating a smooth contour requires proper drilling, knowledge about the apparent geology, a well designed blast pattern and ideally a smooth blasting prod
Jan 1, 2012
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Using Artificial Intelligence and 3D Imaging to Provide Real-time Particle Size Analysis on Haul Trucks
By Saeed Karimifard, Saman Nouranian, Shahram Tafazoli, Bahram Sameti, Frank Chu, Caitlin McKinnon, Tetiana Konstantynivska, Glen Turner
We propose a particle size analysis solution for haul trucks that does not impact current operational workflows. Using artificial intelligence (AI) and 3D imaging technology, our solution reliably loc
Feb 1, 2020
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Characteristics of Pressure Wave Propagation in Emulsion Explosives
By Fumihiko Sumiya, Yuji Ogata, Masahiro Seto, Yukio Kato, Yuji Wada, Kunihisa Utsuyama, Yoshikazu Hirosaki
It is well known that emulsion explosives can be dead-pressed especially in underground blasting. Voids in emulsion explosives will affect such malfunction of explosives. To clarify the factors that a
Jan 1, 2001
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A Coyote Blast at Rhone-Poulenc's Maiden Rock Silica Quarry
By John C. Adams, Darrel D. Porter
After conventional drill and shoot methods were determined to be unfeasible due the fractured nature of the ground, a "coyote" blast was designed to produce 250,000 tons of rock from Rhone-Poulenc's M
Jan 1, 1993
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Ammonia (NH3) in blasting fumes – origin and measurement
By Peter Moser, Michael Messner, Florian Bauer
The existence of ammonia in underground blasting fumes was frequently measured in various field tests (6, 7). Ammonia in fumes with a TLV (threshold limit value) of around 30 ppm (slightly different i
Jan 1, 2010
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Winning thin coal seams with Stratablast™- improving coal recovery and sustainability at Anglo Coal’s Drayton Mine
By Matthew Graham, Tapan Goswami, Geoff Brent
In dragline coal mining operations, throw blasting is used for the controlled placement of overburden to maximise coal exposure rates or to minimise overburden removal costs. This may necessitate sacr
Jan 1, 2010
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The Use of Numerical Modeling to Enhance Fines Predictions
By A. S. Tawadrous
Fines are produced in any blasting application. Depending on the application, fines may or may not be a desirable product of the blast. In most quarry and construction applications, fines are consider
Jan 1, 2012
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The Real Relationship Between Cracks and Vibrations: Are Cracks in Buildings Really Created by Vibrations?
By Thierry Bernard
It was in the 1980s that USBM published one of the first regulations to protect constructions from the effects of vibrations caused by mine blasts. Several countries have made their own regulations or
Jan 1, 2018
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Principal Component Analysis Of Vibration And Air Blast
By John Cory, David Lily, Bill Hissem
The Lafarge granite quarry in Cumming, Georgia is using Principal Component Analysis (PCA) and Biplot charting to identify important variables and control air blast and vibration. Every blasting situa
Jan 1, 2010
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Electronic Initiation System in Fosterville Gold Mine Development
By C. Zuniga, S. Combrinck, C. Peters
Agnico Eagle Gold have partnered with Enaex Australia at their Fosterville gold mine to leverage a combination of drill and blast technologies to optimise underground development mining. The mine is t
Feb 6, 2023
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Understanding Single Salt, Dual Salt, and Multiple Salt Bulk Emulsions and Emulsion Blends
By Dr. Bronwynne Victor, Quentin Steyl, D. Scott Scovira
Bulk emulsions and emulsion blends may be formulated with a single salt, dual salts, or multiple salts. Blasting professionals familiar with single salt ammonium nitrate emulsion products may be less
Feb 1, 2020
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Impacts of Measurement Accuracy on Three-Dimension Vibration Models
By Gavin Yuill, Kameron Ray
"The impact on vibration model accuracy by input data that is inaccurate was previously unknown, butthought to introduce significant error. This paper explores the impact of accuracy of different GPSr
Jan 1, 2017
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Hybrid Specifications for Underwater Blasting Specifications on the Soo St. Marie Channel Deepening
By Timothy Smith, Matthew Ryan, Dr. Anthony Konya
Hybrid specifications are a relatively new style of specifications specifically for the drilling and blasting industry that has seen widespread use over the last decade with the U.S. Army Corp of Engi
Feb 1, 2020
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Detonation Velocity of Precompressed Emulsion Explosives
By Fumihiko Sumiya, Yukio Kato, Yoshikazu Hirosaki
Secluential blasting is one of the most popular methods in blasting. tiowever, it is well known that an emulsion explosive can be dead-pressed by dynamic pressure generated by the previous detonation.
Jan 1, 2002
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Slope stability’s control for designing and execution of massive open pit blasting
By P. Ravanal, J. Blazquez, F. Ortega, P. Couceiro, J. Navarro
Massive blasting technique is an interesting alternative to optimize mining’s performance by enhancing digging rates and overall operation’s activities, especially when a reduced operational bench wid
Jan 1, 2024