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Blasting and Its Control at Hydro Quebec
By Wilfrid Comeau
Since 1967 Hydro Quebec has undertaken the control of blasting and its effects at its power development sites. Blasts have been monitored using a commercially available three component seismograph. In
Jan 1, 1977
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Using Digital Electronic Detonator of Blasting LS and LDT Buildings
By Zheng Deming, Li Hongwei, Lei Zhan, Dai Chunyang
This paper introduces the application of a digital electronic detonator in the demolition blasting of largescale (LS) and long delay time (LDT) frame-shear structure buildings. The whole building to b
Jan 1, 2019
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Mechanics of the Run up on Linear Shaped Charges Cutting
By Jason Baird, Seokbin Lim
Run up is a factor in Linear Shaped Charge (LSC) cutting for which an account must be made. It occurs on the initiation segment of the charge, and the cutting performance during this period is signifi
Jan 1, 2006
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Title XI - Regulation of Explosives: Federal Explosive Regulations
By Robert F. Dexter
This paper discusses the Federal requirements of this regulation for the importation, manufacture, distribution and storage of explosive materials. The interstate or foreign commerce in explosive mate
Jan 1, 1975
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Journal: Security Matters / Guide to Recording A Suspicious Person
By Unknown
ATF has provided a Guide to Recording Suspicious Persons Description in the Safety & Security Brochure. This guide may be useful for recording descriptive information on any suspicious individual. Sus
Jan 1, 2009
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A Study of Damage Profiles Behind Blasts
By K. G. Holley
Blasting is usually required to produce easily-excavated broken rock, while leaving surrounding rock masses as undamaged and stable as possible. In mining applications, it is common to utilise product
Jan 1, 2004
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Confronting Underground Workings Near Open Pit Mines
By Park McLure, Paul Kunze
Abandoned underground mine workings have been regularly encountered in open pit mining excavations for many years, for the most part without many serious problems resulting. During the last several ye
Jan 1, 1993
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Efficient use of energy to control bench damage
By Elias Poulakidas, Marco Arellano
The impact of a higher copper price on the open pit metal mining sector has derived in a faster and safer way in which the mining operation of broken and mineralised material is carried out. In this r
Jan 1, 2008
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Influence of delay time accuracy on the fracture process in smooth blasting
By Yoshiharu Tanaka, Keita Morooka, Masaaki Yamamoto, Katsuhiko Kaneko
Smooth blasting is the standard method for underground rock excavation, to reduce over break and remaining rock damage. We already utilized the high accuracy of the electronic delay detonator to inves
Jan 1, 1998
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Blast Damage Control During Underground Mining
Tracer blasting is commonly used in Canadian underground mines for overbreak control. It involves tracing a column of ANFO with a low strength detonating cord. In order to investigate the effectivenes
Jan 1, 1994
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Bulk Loading of Emulsion Explosives in Shaft Sinking
By R J. Roach, D Roy
After months of discussion on ways and means to improve productivity in the shaft sinking process, it was decided to look at those areas where, historically, methods have been stagnant for many years.
Jan 1, 1997
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Blasting a Very Big Boulder Under Adverse Conditions
By Brad Johnson
Homestake Mining Corporations' open cut operation at Lead SD. experienced a highwall failure in October of 1993. The failure released a 75' section of rock wall at the 5280' level. It came to rest on
Jan 1, 1995
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250 Pound Down-Hole Drilling in Hard Rock
By R L. Calhoun
A paper on High Pressure Air must start with the industry accepted definition of High Pressure Air and, for the reader who is unfamiliar with High Pressure Air systems, include basic information on wh
Jan 1, 1976
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Improving the Amount of Material Cast at Highvale Mine Using Electronic Detonators
By Robert Slivinski, Kyle Hobbs, Michael Stern, John Willox, Brad Jewson
Prairie Mines & Royalty Ltd. produces over 12 million tonnes annually of thermal coal for TransAlta’s Sundance and Keephills power stations from the Highvale Mine. This opencast mine is next to a lake
Jan 1, 2008
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Improved Fragmentation and Safety with Proper Borehole Loading Techniques
By Lars Osen
Both fragmentation and safety can be improved by following proper procedures in loading boreholes. Proper loading procedures such as primer location, borehole sealing, decking, and stemming along with
Jan 1, 1985
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Finite Element Simulation of Time-Dependent Fracture and Fragmentation Processes in Rock Blasting
By M Oldenburg, P J. Digby, L Nilsson
A constitutive model for the simulation of fracture and fragmentation processes in rapidly loaded rocks is studied. The model was included in a wave propagation finite element code. The results obtain
Jan 1, 1985
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Single Round Blasting of 10 Food Diameter x 65 Foot Depth Emplacement Shaft Collars at the Mercury, Nevada Test Site
By Tom Short, Bill Beam
Some of the weapons testing shafts at Mercury, Nevada require depths of 1000ft and diameters of 10 feet. The top 40 feet to 65 feet is drilled, blasted and excavated by Large caisson type augers in or
Jan 1, 1991
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Application of Lightning Detection and Warning Systems within the Explosives and Blasting Environment
By William C. Geitz, Dan Fitzgibbon
Lightning has always posed a serious threat to blasting operations, especially within the mining and construction industries. In recent years, technological advancements in communications systems and
Jan 1, 1991
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Computer-Aided Blast Fragmentation Prediction
By G E. Exedaktylos, Y Zhou
The complex and non-linear nature of blast fracturing has restricted common bract design primarily to empirical approaches. The code developed for this investigation simulates the pattern of interacti
Jan 1, 1989
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Journal: 100 Years / DU PONT BLASTING POWDER 1913
By Robert Hopler
In use, blasting powder is exploded by a spark from fuse, electric squib or miner’s squib, or by a primer of some high explosive, the last being employed only in heavy charges on open work. In mining,
Jan 1, 2014