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Blasting with a Spherical Charge at Serra Geral MineBy Marcello Crispi, Valdir Silva, Juarez Moraes
Companhia Vale do Rio Dote - CVRD is the largest mining company in Brazil and the largest iron ore producer in the world. Serra Geral Mine (SGM) is located at Iron Quadrangle of the State of Minas Ger
Jan 1, 2002
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Drilling Efficiency and the Associated Benefits to the Mining ProcessBy Lee B. Paterson
Mining Engineers throughout the world have an appreciation for the importance of the role of the Blasthole Drill in one of the primary elements of the mining process. This paper highlights areas that
Jan 1, 2000
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Recent progress with the European Directive on Pyrotechnic ArticlesBy Martti Hagfors
UNDERWATER EXPLOSIONS - Part 6 - EFFCTS OF CYLINDERICAL SHAPE OF CHARGE TO THE RESULTS OF ENERGY MEASUREMENTS OF EXPLOSIVES
Jan 1, 2008
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Regulatory Compliance for Drillers, Blasters and Distributors Hotspots and PitfallsBy Paul Downing
Anyone in business today knows how difficult and time consuming it is to keep abreast of new and revised federal regulations. Those in the explosives industry know that such a task can be next to impo
Jan 1, 2003
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Design of Large-Scale Choked Destress Blasts in Mine Pillars Using the Empirical Destressability Index MethodologyBy Richard Brummer, John Hadjigeorgiou, Patrick Andrieux
Some of the major challenges associated with underground mining at depth and/or under high extraction ratios are related to the resulting high stress levels, which can lead to the failure and collapse
Jan 1, 2012
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More Efficient Use of Your GPSBy Wes Bender
Considering the current interest in Global Positioning System (GPS) usage, it might be timely to look at a more efficient means of utilizing these instruments. The GPS system currently utilizes 28 sat
Jan 1, 2002
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Behavior of Nitrogen Oxides in the Product Gases from Explosive DetonationsBy James Rowland, Marcia Harris, Richard Mainiero, Michael Sapko
All explosive materials produce a cloud of reaction products, the most toxic of which is nitrogen dioxide (NO2). In the study reported here, 4.5-kg (10-lb) charges of blasting agent confined in either
Jan 1, 2006
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Journal: 100 Years / Harper’s Weekly New York May 21, 1870 / (Continued from the March/April 2006 Journal of Explosives Engineering) / The Value of Detonating Caps in BlastingBy Robert Hopler
It is the nature of the initial detonation to the powder around the cap which governs the greater or less effect of the explosion of the whole charge. The cap communicates to the first particles of po
Jan 1, 2007
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Micro Economic Forces in the Mining and Explosives IndustriesBy David P. Reddick
Economics is a social science dealing with the allocation of scarce resources. In modern times the “science” was identified by Adam Smith in his book, The Wealth of Nations, written in 1776. Mr.Smith,
Jan 1, 1992
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Roadblocks: Increasing Production, Reducing ProblemsBy Greg Parker
"As the Explosives Industry continues to evolve and condense, those involved, such as Blasters,Contractors, Distributors and Consultants, continue to be challenged by both internal and externalforces.
Jan 1, 1999
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Post-Blast Cast Profile Shape Prediction at Large Coal Surface MinesBy Paula Pereira
The better the capability of accurately predicting the results of any process the less laborious and costly is the optimization or improvement of that process. Rock blasting is a process that one inte
Jan 1, 2001
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Optimization of Development Drilling and Blasting in an Underground MineBy B Mohanty, G Ludwig
A thorough assessment of development drilling and blasting practice was carried out at two underground mines at INCO operations in Thompson, Manitoba. The study showed that significant improvement in
Jan 1, 1998
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Utilization of Near-Source Video and Ground Motion in the Assessment of Seismic Source Functions from Mining ExplosionsBy Brian W. Stump, David P. Anderson
Identification of seismic events detected under a Comprehensive Test Ban Treaty requires a clear physical understanding of the different types of seismic sources including mining explosions, rock burs
Jan 1, 1995
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Assessment of Ideality of Some Commercial ExplosivesBy J Aydin Bilgin, Sedat Esen
This paper describes the ideality of some commercial explosives with the help of the detonation theory and detonation velocity measurement. Ideality of an explosive can be determined by comparing expe
Jan 1, 1999
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Blasting at Dacotah CementBy Lyle Dennis
Emphasis on increased production while maintaining rigid quality standards has necessitated a change in blasting technology at Dacotah Cement's limestone and gypsum quarries. The following three metho
Jan 1, 1996
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Journal: A Case Study of Full-Face Blasting in a Highway Tunnel in KoreaBy Hae-Moon Choi, Sang-Don Lee, Chang-Ha Ryu
The purpose of the study presented in this article is to establish a standard blast pattern to yield optimum blasting performance along with an attempt to reduce a difference between design and constr
Jan 1, 2006
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Engineering Control and Information Management of Blasting Programs in Construction and Quarrying OperationsBy Frank Sames, Brad Terhune
In many construction projects and in most quarrying operations drilling and blasting remains the only feasible method of loosening rock in the removal of rock or overburden, the development of the qua
Jan 1, 2004
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An Investigation into the Effect of Varying Joint Aperture and Nature of Surface on Pre-splittingBy Syed M. Tariq, Paul N. Worsey
Presplitting is a now a universally accepted perimeter control technique in rock excavation. The success of presplitting and the smoothness and integrity of the resulting perimeter is largely dependen
Jan 1, 1996
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Blast Vibration and Seismograph Section - A History of the Development of Instruments for Measuring Vibrations of the Earth - Part 1By Robert Hopler
Earthquakes, ground vibrations, seisms, or whatever you want to call the shaking of the earth, have been a fact of life throughout time. In spite of this, most people (except those unfortunate enough
Jan 1, 2006
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Blasting to the Rescue, Underwater Concrete Bridge-Pier DemolitionBy Jerry Wallace
A highway bridge demolition project to allow shipping access to a new container port in Puget Sound ran into trouble when contract-stipulated mechanical means of demolition failed. Blasting was then e
Jan 1, 1999