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The Large Chamber Test for Toxic Fumes Analysis of Permissible ExplosivesBy Dennis J. Viscusi, James H. III Rowland, Lon D. Santis, Mark H. Weslowski
This paper describes the procedure for analysis of toxic fumes from the detonation of high explosives using the Large Chamber at the U.S. Bureau of Mines (USBM), Pittsburgh Research Center (PRC). This
Jan 1, 1995
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Near Borehole Fracture and Fragmentation Studies in Copper PorphyriesBy Catherine T. Aimone
A series of experiments have been performed to characterize fragmentation and microcracking in quartz monzonite copper porphyry. The flyer plate impact method was used to generate plane shock waves in
Jan 1, 1985
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The Effect of Explosive Type and Delay Between Rows on FragmentationBy Mark S. Stagg, Rolfe E. Otterness, Stephen A. Rholl
The Bureau of Mines fired seven test blasts in a 22-ft bench of limestone, screening the material to investigate the influence of explosive type and between row delays on fragmentation. Four 4-hole, s
Jan 1, 1989
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Seismic Study of the Dynamic Response of Rock to Cylindrical Charges Fired in a Half and a Quarter Space GeometryBy Sharon K. Reamer, Klaus G. Hinzen
A series of controlled seismic experiments was performed in a limestone quarry in southern Germany to study seismic effects of cylindrical charges fired in both a half space (HS) (burden 63 m) and qua
Jan 1, 1991
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Fire Protection Provided by Detonator ContainersBy Lon D. Santis
The Code of Federal Regulations Title 30, Parts 56, 57, 75, and 77 require that detonators and explosives be separated by four inches of hardwood or equivalents when transported together in mines. Thi
Jan 1, 1997
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Journal: Safety Talk / Crisis ManagementBy William Reisz
The explosives and blasting industry has a commendable safety and security record, especially over the last several decades. This is due in large part to our newer technologies, better training and ed
Jan 1, 2012
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Tigerwin - a Windows PC Code from Computing Explosives Performance and Thermodynamic PropertiesBy 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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Development of Drop Raise Blasting at the Homestake MineBy Paul V. Sterk
In the early 1980's, the Homestake Mine converted from labor intensive methods such as open cut-and-fill mining to Vertical Crater Retreat (\/CR) bulk mining and mechanized cut and fill. This transfor
Jan 1, 1991
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Degree of Rock Fragmenjation Under High Strain RatesBy U. Prasad
This paper summarizes the investigation carried out on a wide range of rock types, subjected to high velocity impact to simulate explosive action. A Split- Hopkinson Bar apparatus was used to generate
Jan 1, 2001
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Journal: Safety Talk, Drilling Safety – Minimizing Risk FactorsBy William Reisz
Many different types of drills coming in a wide range of sizes and configurations are used in the blasting industry today. While each system may have its own unique attributes and capabilities, it may
Jan 1, 2013
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A non-toxic, safe and reliable non-primary-explosives detonatorBy Marco Antonio Falquete
Conventional detonators and blasting caps make use, as igniters, of flame-shock-, andfriction-sensitive primary explosives, such as lead azide, lead styphnate, mercury fulminate, etc, most of them sev
Jan 1, 2007
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Methods of Evaluating Exploxive Reactivity of Explosive-Contaminated Solid Waste SubstancesBy Richard J. Mainiero, T S. Bajpayee
The Bureau of Mines, U.S. Department of the Interior, has developed test procedures and criteria for evaluating explosive reactivity of explosive contaminated solid waste substances generated by U.S.
Jan 1, 1988
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Improved Drill and Blast Designs Free $3.6M of Ore for Surface Copper Mine Tacio Ferreira, Dyno NobelBy Tacio Ferreira
A surface copper mine in the Western United States faced challenges in recovering rock and ore from final walls because of geotechnical constraints that require restrictions on methods for loading bla
Jan 21, 2025
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Journal: Safety Talk / Pump Protection Systems on Mobile Equipment Recommended Safety ProgramBy Tom Watts
The practice of pumping bulk blasting agents is regulated by many agencies around the world. The explosives manufacturers have done an excellent job of hazard and operability studies allowing criteria
Jan 1, 2011
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Update on Blasting Near a CrusherBy Scott G. Giltner, Alex Schwenk
This paper is an update on a paper presented at the 2022 ISEE conference. The original paper presented how the mine operator desired to open up ore reserves near several mine structures including two
Jan 21, 2025
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Detonation Behavior of Emulsion Explosives Containing Large VoidsBy Y. Hirosaki, H. Hamashima, Y. Itoh Kato, S. Tanaka
The emulsion explosives show non- ideal detonation behavior, and its detonation velocity can be controled by selecting the size and adjusting the quantity of voids involved. To establish the technolog
Jan 1, 2000
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Half-Way House - Controlled Demolition Group "Rocks the Casbah" with Tricky Special-Effects-Laden BlastBy Jane Wright, Brent Blanchard
Question: When it comes to demolition projects, what could be more demanding than asking a blaster to explosively demolish a stubby, heavily-reinforced concrete structure in the heart of a third-world
Jan 1, 2002
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Repeated Blasting: Fatigue Damaging or Not?By Mark S. Stagg, David E. Siskind
The Bureau of Mines arranged to have a wood-frame test house built in the pat of an advancing surface coal nine so it could investigate the effects of repeated blasting on a residential house. Structu
Jan 1, 1985
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Application of Numerical Modelling to Practical Blast DesignBy P D. Katsabanis, L Liu
Numerical modelling of fragmentation and throw is used to provide information on practical blast design parameters. The function of airdecking and its practical implications, the importance of the ini
Jan 1, 1997
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Floor Blasting for Establishment of a New Crusher in Underground Limestone MineBy Chris Searing
An underground room-and-pillar limestone mine in Western Missouri acquired a new primary crusher, physically larger in every dimension than the unit it replaced. Due to the space constraints within th
Feb 6, 2023