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Blasting and Monitoring Practices for the MSDGC Deep Tunnel Project
By Kevin Cole, Dennis A. Clark, F William Laslow
Since 1976, the Metropolitan Sanitary District of Greater Chicago, (MSDGC), has commissioned the excavation of a tunnel system in the Chicago area, hundreds of feet below the surface in solid limeston
Jan 1, 1982
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Breaking New Ground: Deflagrating Cartridges for Urban Tunneling at Grand Central
By Joseph A. Meyers, Michael D. Stokes
This paper will focus on the use of Deflagrating Cartridges for tunnel excavation in Midtown Manhattan at Grand Central and 42nd Street Station, where the excavation has challenges due to the proximit
Jan 21, 2025
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Application of 3-D Plots and Regressions to Blast Vibration Analysis - Defining a Site-Specific Form of the Charge Weight Scaled Distance
By Ruilin Lang
This paper presents an application of 3-D plots and non-linear regressions to define a sitespecific form of the charge weight scaled distance. The PPV (PPA) of single hole blasts is normally considere
Jan 1, 2006
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Stope performance optimisation through the introduction of new underground bulk explosives technology
By S. Evans, J. Phillips-White, D. Morton
The partnership between Orica and MMG at the Dugald River Zinc mine in Australia has led to the first global field trials and deployment of Orica’s Subtek™ 4D™ (hereafter referred to as 4D) Bulk Syste
Jan 1, 2024
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Large Cast Blasting Programs Require Design Flexibility
By Jeff Wachendorf
As the title implies, this paper details the start of a cast blasting and the design flexibility required to satisfy different parameters encountered on a large coal mine employing cast blasting as th
Jan 1, 2015
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A Blasting-induced vibration control approach for resuming blasting activity near tailing dams in the Quadrilátero Ferrifero region after “Brumadinho Dam Colapse”.
By Marcus Neves, Eventomar Junior, Adilson Castro, Leandro Silveira, Sérgio Augusto
The collapse of the Vale S.A. mining tailings dam in 2019, a tragic event that shook Brazil and the world, had consequences that transcended the immediate pain and devastation. Among them, the suspens
Jan 21, 2025
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Theory of Dynamic Confinement
By Dr. Tristan Worsey, Dr. Jhon Silva-Castro
Confinement is an important aspect of blasting. Reducing and increasing confinement can determine whether a blast design performs properly. Over-confined shots usually have poor fragmentation, higher
Jan 21, 2025
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Conformal Symbolic Regression Applied to Rock Blasting Vibration Prediction
By Anderson da Cunha Meireles, Pedro Garcia, Ernst Young, Leandro Coelho, Carlos Eduardo Soares Feliciano, Key Fonseca de Lima
Rock blasting is a crucial technique employed in mining construction and quarrying industries to fragment large rocks into smaller, more manageable pieces. However, it often generates ground vibration
Jan 21, 2025
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Testing of Emulsion Explosive Efficiences at Different Rocks
By D Vrkljan, Z Ester
There was no use of emulsion explosive at Croatia till 1997. Several attempts have been done to bear out the economical and technological affordability of applying the emulsion explosive for open pits
Jan 1, 1999
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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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Analysis of Annual-Delayed Successive (4D) Geophysical Charges in a Borehole
By D. Preece
The mining and oil industry employs techniques such as geologic mapping, core drilling and electromagnetic and potential field techniques to explore for new deposits. Since new discoveries of major ne
Jan 1, 2011
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The Bubble Mystery
By Richard Dooley
This paper is one sided because it presents the problem, but not the solution. The problem of blisters (bubbles) and occasional tears in caisson liners occurred when blasting and we have not found a c
Jan 1, 1983
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Pyrotechnic Mortar Pressure and Exit Velocity Study
By R. Sibley, K. Perry, E. McCorkle, M. Coy
Black powder has been used in fireworks since the 10 th century in China. To this day, black powder still has a variety of uses, including fireworks, and remains relatively unchanged. Black powder is
Jan 1, 2024
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The Demolition of Genoa's Silos, An Example of Synergy
By Amanda Verno, Danilo Coppe, Andrea Reggiani, Adolfo Bacci
The methodological example that comes from the demolition of the Genoa grain silos, should not been considered as an auto-celebration of a difficult project successfully executed, but should serve as
Jan 1, 2005
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Explosive Freeze Pipe Cutting at the McArthur River Uranium Mine
By Dale Preece, Mike Stern, Steve Piercey, Ayman Tawadrous, GC Zhao
The McArthur River uranium mine in Saskatchewan, Canada is the world’s largest high-grade uranium mine. It has employed a freeze-wall system consisting of multiple freeze pipes to control the large qu
Jan 1, 2011
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The International Development of Dangerous Goods Transport Regulations
By Ben Barrett
Dangerous goods, known as hazardous materials in the USA, are subject to special controls during transport to ensure the safety of the public. Dangerous goods are divided into nine classes, and Class
Jan 1, 2010
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Close in Blasting in Urban Areas, Changing Regulations and a Case Study
By C. Breeds, K. Jeremiah, E. Jennings
Washington State has a well developed set of blasting regulations which have been promulgated by the Department of Labor using extensive stakeholder input, not only from citizens but also from manufac
Jan 1, 2024
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Blast Desification Techniques (An Operator's Guide)
By Patrick D. McLaughlin, C Fordham
"The project outlined in the accompanying paper was to densify beach sands on the pond side ofa tailings dyke to the strength required for future dyke construction, This was to be achievedthrough the
Jan 1, 1992
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Analysis of Blast Damage to Green Concrete: A Dynamic Testing Approach to Field Cured Specimens
By Travis Davidsavor, Stanley: Dong Vitton
Concrete is a common construction material used throughout the world, and with increasing demand of fast-track construction, blasting and concrete casting are occurring simultaneously at many sites wh
Jan 1, 2003
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Blasting Safety
By Thomas E. Lobb, Harry C. Verakis
Significant progress has been made in the reduction of serious injuries and fatalities resulting from mine blasting operations. Despite the progress, injuries and fatalities continue to occur. A leadi
Jan 1, 2005