Search Documents
Search Again
Search Again
Refine Search
Refine Search
-
Improving Fragmentation During Ring-Hole Blasting in Coal in Blasting Gallery Panels
By Sri Sawmliana, P. Pal Roy
Blasting Gallery (BG) method was introduced in India for higher production and low cost of excavation to substitute conventional hand section and stowing methods for thick coal seam. The Singareni Col
Jan 1, 2003
-
Journal: 100 Years / FIG. 2. Bridge wrecked by material from blast near Chattanooga, Tenn
By Robert Hopler
A blast caused the destruction of a bridge and loaded freight train and the death of three men, near Chattanooga, Tenn., on May 16, 1907. The blast and its disastrous effect has been described by Mr.
Jan 1, 2008
-
Signature Hole Analysis and Vibration Modeling: An Indonesian Case Study
By Wawa Jaka Sungkawa, Slamet Rachman Jaka, Tom Dermody
Nowadays, with such a focus on environmental protection, surface mining activities have come under pressure to ensure their activities do not adversely affect the local surroundings. As part of the ex
-
Concepts and Case Study for Regular Rhythmic Timing and Sequence
By Neal Lee, Braden T. Lusk, Jhon Silva-Castro, Patrick J. Jenks
"Timing and charge sequence are very important for optimized blast design. Traditional nonelectricinitiation systems have moved the industry toward a system of delays consisting of hole-to-hole androw
Jan 1, 2016
-
Crater Blasting Techniques and Designs in Compacted Soils
By Patrick D. McLaughlin
Crater blasting techniques have had relatively little application in the surface mining industry. This is not surprising, considering the geometry required to efficiently use cratering. The more widel
Jan 1, 1992
-
Non-Electric Shock Tube Initiation Systems Applications and Hookups
By John Watson, Tom Treleaven
This guide presents nur-nerous patterns that provide 8 millisecond separations between initiated charges. The guide is tabulated in seven sections to provide Quick reference by number of decks or bunc
Jan 1, 1995
-
Christmas Day 2020 VBIED Blast Investigation Findings and Damage Assessment of Nearby Historic Buildings in Nashville, Tennessee, USA
By J. Mikhael Erekson, Connie Campbell Brashear, Brent Meins
Christmas morning 2020, an IED in an RV was detonated along an evacuated section of downtown Nashville, Tennessee. The blast damaged over 40 buildings, including AT&T’s Main Central Office and caused
Feb 6, 2023
-
Applied to a High Risk Case History
By C Agreda
The Cushion Blasting Technique applied to solve the high risk case history represented by a 10,704 TM rock locate at 120 M from the hydroelectrical plants of 350 KV each, is described, analyzed and di
Jan 1, 2005
-
Advanced Blast Modeling for Mining Steeply Dipping Coal Seams
By Dan L'Heureux, Joe Haid, Stephen H. Chung
Most coal deposits in Western Canada involve steeply dipping multiple seams. An efficient way to recover coal seams would be to drill through the seams and blast both the overlying and underlying wast
Jan 1, 1998
-
A Model for Near and Farfield Blast Vibration Based on Multiple Seed Waveforms and Transfer Functions
By D. Scott Scovira, Ruilin Yang
Blast vibration in the highwall from a cast blast in open pit mines or in the hanging walls from a stope blast in underground mines is a common concern. Vibration in such cases is a typical near-field
Jan 1, 2010
-
Logistical Processes in the Explosives Industry Using Examples from Daily Work
By Frank Hirthammer
Productivity, customer relations, and effectiveness of work depend to an ever-increasing extent on a functioning logistics system tailored to the needs of the user. Of course, it is not possible to co
Jan 1, 2019
-
The Safety of Explosives Handling and Blasting in the Mining Industry
By Kerina Taylor
Due to their high amount of stored energy, explosives have been the cause of many serious injuries and fatalities over the last centuries. Despite safety advances and awareness in the last decades, in
Jan 1, 2011
-
Thermodynamic Work Principal Overture — Not Just Rock n’Roll
By Michael Wieland
The resolving capacity of the thermodynamic work-principal model has been seriously refined over its twelve year history, so a review of the innovations, wrong turns and their rectification is warrant
Jan 1, 2009
-
Measuring and Analysing Percussive Pulses to Extend Depth in Top-hole Percussion Drilling
By Gary Cavanough, Stuart Addinell, Hector Parra
Drilling deep, straight, accurate holes in hard rock to achieve efficient blasting is a challenge for the mining/quarrying industries with short holes normally drilled using “top hole hammer” (THH) an
Jan 1, 2013
-
Overburden Blast Cast Designs, Factors Affecting Results and Economics
By Connie Postupack
The purpose of the workshop is to show the effect of various blasting factors on the overall results.
Jan 1, 1994
-
Blasting 1 Million Tons, 205 Meters from a Town
By Thierry Bernard, Guy Gagnon
Blasting at very close proximity to urban areas is typically a situation where both local communities and mining stakeholders get nervous. The context becomes logically even more tensed when the blast
Jan 1, 2014
-
Blast Assessment and Optimization with Respect to the Control of Environmental Effects
By Frank Sames
The control of the environmental effects, especially blast vibration and airblast, has become a dominating planning criterion for most surface blasting operations. Compliance with existing regulations
Jan 1, 1997
-
Accurate, Secure Internet Explosives Silo Weight Database using Bolt-on Sensors
By Robin Shepherdson
Security concerns have prompted the Department of Homeland Security to investigate the use of recording systems on all vessels holding materials used for blasting; a new regulation is expected in the
Jan 1, 2015
-
The Effects of Underground Blasting on Nearby Pre-existing Structures
By Scott Rosenthal, Logan Connolly
Butte, Montana holds a prestigious place in the history of mining, deemed “The Richest Hill on Earth,” containing a plethora of underground mines. The Orphan Boy/Orphan Girl underground mines, on the
Jan 1, 2018
-
Initial Selection of Explosive Materials for the Explosives Terrorism Risk Assessment
By Rachel E. Gooding, George C. Emmett, David R. Bradley
The United States (U.S.) Department of Homeland Security (DHS) Directorate of Science and Technology (S&T) is using a probabilistic risk assessment (PRA) approach to evaluate the risks from terrorist
Jan 1, 2017