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Vibration Characteristics on Surface and in Underground Openings from Opencast Mine Blasting
By M. Roy
Safety and stability of underground coal mine workings are always in danger when opencast mines are operating in close proximity. A study was conducted to investigate the level of vibration generated
Jan 1, 2007
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Drill Monitoring and GPS Developments and their Impact on the Drill to Mill Process
By John Vynne
Too often, a mine’s operations, including drilling, blasting, loading, hauling, crushing, processing, etc., are considered independent steps, rather then a continuous process. In fact, these are inter
Jan 1, 2001
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The High Explosives Industry in the United States: The First 20 Years - 18654 885
By Robert B. Hopler
The history of the first twenty years of the high explosives industry in the United States begins as an illustration of the free enterprise system at its best and ends with the industry virtually take
Jan 1, 1994
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Impact of fine Aluminum on ANFO Explosives
By O. Rielo, P. Katsabanis
Traditionally fine aluminum is not used in dry commercial explosives due to the hazard associated with aluminum dust explosions during mixing. An industrial process has been developed which enables th
Jan 1, 2009
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Understanding Toxic Fumes from Mining Explosives
By Michael S. Wieland
"Toxic fumes cause fatal andnonfatal incidents in underground mining, where the working environment tends to trap the fumes, hindering the restoration of non-harmful conditions. Workers can underestim
Jan 1, 1997
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Seismograph Calibration - What You Should Know
By Bob Turnbull
The dictionary definition of calibration is: to determine by measurement or comparison with a standard, the corre c t value for each scale reading on a device.1 As a consultant or blast contractor, yo
Jan 1, 2004
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Near-Field Blast Vibration Monitoring: Practical Considerations and Issues
By John Heilig, Patrick Andrieux
"Near-field monitoring of blast induced seismic vibrations is a practical and useful way of assessing blast field behaviour for diagnosis and optimization purposes. It is also necessary in order to pr
Jan 1, 1995
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Economics of Buffer Blasting in Surface Mineral Mines-Minimizing Ore Waste and Dilution
By Dale S. Preece, J Paul Tidman, Stephen H. Chung
A discrete element computer program named DMC-BLAST (Distinct Motion code) has been under development since. 1987 for modeling rock blasting (Preece & Taylor, 1989). This program employs explicit time
Jan 1, 1998
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Internships: A Bridge into the Explosives Industry
By Richard Hosley, James Daley
Every grey haired member of the explosive’s industry has said at least once, “We have to get some younger blood into our industry, I might want to retire someday.” And many a youngster who loves to se
Jan 1, 2014
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Simple Models for Gas Flow and Burden Movement During Blasting
By Italo Onederra, Jason Furtney, Ewan Sellers
The detonation reactions occurring during rock blasting result in high pressure gas phase products from the condensed explosives typically used in mining applications. After detonation and the initial
Jan 1, 2012
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Journal: The Kingdom Implosion
By Douglas Anderson
Even though there is always a feeling of anticipation before a blast is detonated, most blasts are part of a day’s work. Once in a while there is an event that impresses even the most jaded blaster. F
Jan 1, 2001
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Lafarge Exshaw Finer Fragmentation Study
By Jean-Guy Levaque, Robert Ethier, Ron J. Elliot
This paper presents data gathered during a comprehensive study on the impact of improvements to fragmentation in a major Limestone quarrying operation. The full impacts of gains in fragmentation are t
Jan 1, 1999
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Blast Control Measures at the Speekfontein Colliery Strip Mine Situated Close to a Major Power Situation in South Africa
By A Rorke, B Cubitt, R Beeslaar
The recent drop in the value of the South African Rand has resulted in an increased export value for South African coal and has lead to new coal reserves becoming available for mining. Very often thes
Jan 1, 1997
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Evaluation of Ground Vibration Induced by Blasting During the Excavation of a Transportation Tunnel in Istanbul Metropolis
By Ali Kahriman, Abdulkadir Karadogan, Deniz Adiquzel, Umit Ozer, Suat Bicer, Mehmet Aksoy
This paper presents the analysis and measurements of blast-induced ground vibrations during the construction of Istanbul Kagithane – Piyalepasa – Dolapdere – Dolmabahçe highway tunnels. These tunnels
Jan 1, 2008
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Momentum Theory – A New Calculation of Blast Design and Assessment of Blast Vibrations
By Robert Boehnke, Bernd Mueller
Despite enormous efforts over the last decades there are still many unanswered questions with respect to calculation and modeling of the blast process using appropriate physical laws. Most calculation
Jan 1, 2003
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The Relation between Excavator Bucket Loading Time and Particle Size Distribution of Shot Rock
By Gungor Tuncer, Ali Kahriman, Abdulkadir Karadogan, Umit Ozer, Kagan Ozdemir
In the condition that drilling and blasting technique is inevitable depending on the rock mass and material characteristics on mining activities, the fragmentation rate and particle size distribution
Jan 1, 2007
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Particles Size Distribution by Static Loading and Fragmentation Using Explosive
By V. A. Akinbinua
This work is intended to examine the relationship between rock fragments produced during compression tests using a soft testing machine, e.g. hydraulic press (the machine used in this work is Amlser r
Jan 1, 2014
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Laser Profiling and Computer Aided Blast Design using the Criterion Survey System and Win-Profile Analysis Software
By Steve Colburn
The CRITERION Survey Systems utilize both theodolite mounted and hand held reflectorless distance meters. These are eye safe, easy-to-use, and specifically designed to endure the harsh environments ch
Jan 1, 1998
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Investigation of the Comparative Effects of a Major Aluminum Supplier’s Aluminum Products in Commercial Explosives
By C. Anderson, Mike Michaelis
Ammonium Nitrate (AN) - based commercial explosives are non-ideal explosives. This is because the chemical and physical structure is heterogeneous on a distance scale comparable to, and in many cases
Jan 1, 2003
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Twin Pendulum-New Method to Simulate the Generation of Toxic Fumes
By Gunnar Persson
The borehole pressure/time history of blasting practice is simulated in a twin pendulum apparatus, where the expanding shotfiring gases force two steel slab swingers apart. A pilot installation built
Jan 1, 1996