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Tunnel blast drill hole surveying – Benefits and Methodologies
By G. Adderley, A. Wetherelt
The problems of poor drilling in underground operations have been highlighted on many occasions. Incorrect collaring and poor angular deviation can all lead to an increased block size, dilution, over-
Jan 1, 2009
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The Construction and Testing of a Polycarbonate Safe Haven Wall
By Braden T. Lusk, Rex A. Meyr, Kyle A. Perry
Following three major mining accidents in 2006, the MINER Act of 2006 was enacted by MSHA and required every underground coal mine to install refuge alternatives to help prevent future fatalities of t
Jan 1, 2014
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What a Gas: Blasting Under Pressure
By Jerry Wallace
This project consisted of blasting for expansion of a major interstate natural gas transmission pipeline pump station. The pump station handled 400-500 million cubic feet (1 l- 14 million cubic meter
Jan 1, 1996
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Small Scale Testing to Investigate Air Blast Loading on Plates
By H Ulrich Leiste, Leslie Talor
This paper describes a series of small scale tests conducted to investigate the loading applied to a flat plate by the detonation of a cylindrical charge very close (between two and three charge radii
Jan 1, 2009
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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
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Wipfrag and Wipjoint - To Measure, Record and Predict Blast Results
By John A. Franklin, Tom C. Palangio, Norbert H. Maerz
WipFrag systems I and II have become the world standard in photoanalysis systems to measure fragmentation. Mines, quarries and excavating contractors can now easily measure blast results and track the
Jan 1, 1997
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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
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Drill Monitoring and GPS Developments and their Impact on the Drill to Mill Process
By John Vynne
Too often, a mine’s operations, including drilling, blasting, loading, hauling, crushing, processing, etc., are considered independent steps, rather then a continuous process. In fact, these are inter
Jan 1, 2000
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Novel Impulse Instrumentation for Buried Explosive Charges
By Phillip R. Mulligan, Kevin Gantz, Aaron J. Ward, allen shirley, Sean Treadway
Understanding the impulse transferred into a structure by the coupled two-phase loading produced by an explosive charge buried in soil is of interest for various applications. The most common impulse
Jan 1, 2016
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"Journal: 100 Years / Keystone Placer Testing and Mineral Prospecting Drillers Catalog No. 2Keystone Driller Company Beaver falls, Pennsylvania 1907"
By Oliver Finn
Gold dredging has made such rapid strides of late and there is such a widespread interest in this branch of mining that I venture to contribute a detailed account of the way in which a Keystone drille
Jan 1, 2008
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Mini-Bench Blasting Applicability at the Excavation for Foundation in Settlement
By Sadettin Bagdatli, Ali Kahriman, Umit Ozer, Alper Celtikci, Yucel Karakus
Due to population growth and rapid urbanization in Turkey, the need for the construction of residential units, transportation and infrastructure facilities has become increasingly more pressing. Since
Jan 1, 2014
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Presplitting Techniques and Field Controls
The objective in controlled blasting is to reduce overbreak to control the final pit wall slope, shaft, drift ditch, bench, etc. to the final planned excavation limit. The six main types of controlled
Jan 1, 1992
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Lothological Recognition Based on Monitored Drilling Performance Parameters
By Jonathan Peck, Doug Pollitt, Malcolm Scoble
Over the past 5 years the Department of Mining and Metallurgical Engineering, McGill University, has been involved in the performance monitoring of both percussive and rotary drills. Studies conducted
Jan 1, 1991
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Pre-Splitting With The New AIRDEK Technique
By David G. Borg, John Bussey
The new AIRDEK (tm) technique for pre-splitting in surface coal mines produces highwall conditions that have greater safety with lower costs for explosives, labor, and drilling. Successful application
Jan 1, 1988
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Journal: Near Field Vibration Monitoring for Rock Mass Damage Control Tala Hydroelectric Project, Bhutan India
By H. Venkatesh, Balachander R.
This article discusses the method that was adopted for controlling damage to rock mass while excavating an underground powerhouse cavern at Tala Hydroelectric Project. It discusses in detail the near
Jan 1, 2006
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Vibrations from Seismic Exploration Blast
By David Siskind
The authors studied small seismic exploration blasts for vibration characteristics and effects on structures in Mexico. Obtained were 267 three-component recordings of ground vibrations and structure
Jan 1, 2002
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Modeling Ground Motion in 3D Geologic Media from Fragmentation Explosions: Preliminary Results
By Donald Thompson, Jessie Bonner, Ileana Tibuleac
Predicting ground motion from complicated mining explosions is important for mines developing blasting programs in regions where vibrations must be kept below certain levels. Additionally, predicting
Jan 1, 2005
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The Actual Cost of Hole Deviation to the Mining Industry - A case Study at Nkana Division of the Former Zambia Consolidated Copper Mines Limited
By Sam Kangwa, Thomson Sinkala
In the mining industry, drilling accuracy has a significant effect on the economy of operations. In this paper, results from the Nkana Division of the former Zambia Consolidated Copper Mines are prese
Jan 1, 2004
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Destructive Wave Interference in Underground Blasting Utilizing Precise Timing.
By Kurt Oakes, Paul Worsey, Braden Lusk, Tony Brasier, Jerry Chambers, Scott Crabtree, Randy Wheeler
Destructive wave interference has been studied in theory for many years. In application however, limited information can be found. Recently, circumstances have enabled a multidisciplinary team to util
Jan 1, 2006
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Unmanned Aircraft Systems Use in Blasting Operations
By Lon Santis, Dale Ramsey
The use of aircraft to support blasting operations in mines, quarries and construction sites goes back to the early days of aviation. Invaluable at times, aircraft use has been limited by cost, the un
Jan 1, 2016