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Rock Fragmentation Modeling Using a Neural Network-Based Approach in a Gold Open Pit Mine
By Cesar Guerra, Alejandro Rojas, Dr. Jhon Silva, Luis Velasquez
The ANN method is applied to predict the P_80 size in one open pit gold mine in Peru. The ANN was implemented in Matlab programming language, and the results from the ANN are compared with data obtain
Feb 1, 2020
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Advanced Electronic Blasting Technology, AEBT Breaking 3, 2015.000 Tonnes of Ore within a millisecond
By Winfried Rosenstock
AEBT has been available for a couple of years and is successfully applied in Australia. Up to now it was mainly used in coal surface mining at the Australian East- Coast. Presently, the proved results
Jan 1, 2004
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Drilling and Blasting in Thick Seam Coal Mines in the Powder River Basin
By Denard A. II Brandt
Today I would like to share with you some blasting practices used in the thick coal seam mines of Northeastern Wyoming. I will begin by giving you a general overview of a thick seam coal operation at
Jan 1, 1984
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Flyrock Elimination Program Part 3: 3D Bench Photogrammetry
By Brian Sandhuas, Robert McClure
All flyrock incidents have the potential to result in injuries or fatalities that can result in loss of company reputation, license to operate with clients, and bear the exposure to high cost liabilit
Jan 1, 2012
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Supporting Quarry Operations with Blasting Technology
By Tacio Ferreira
How state-of-the-art software, data analysis and communication applied to drilling and blasting techniques have have allowed quarries in the Midwest of the United States to improve results downstream
Feb 1, 2020
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Comparison of Highwall Control Methods at Bayswater Colliery
By Tapan Goswami, Michael Croucher
At Bayswater Colliery various methods of controlling highwall stabii were investigated. The use of presplitting was trialled and its effectiveness measured. The presplit hole spacing and explosive cha
Jan 1, 1999
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Violence Factor – The New Tool for Blast Performance Analysis
By Dr. Calvin J. Konya, Anthony Konya
Blast violence has always been a criteria that has been analyzed without a quantitative approach relying on opinions of those viewing the blast and oftentimes does not transfer between open-pit mines,
Feb 1, 2020
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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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Minimising Coal Damage and Loss Due to Cast Blasting
By Tapan Goswami
The main objective of the blasting phase in a coal mining operation is to maximise the coal recovery. However, coal loss due to blasting is a serious problem. The Australian Coal Association Research
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Minimising Coal Damage and Loss Due to Cast Blasting
By Tapan Goswami
This paper discusses the importance of coal mapping, the rock properties of the roof and floor interface of the coal seam, and the significance of loading and initiating designs in minimising coal dam
Feb 1, 2020
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Calculating Shock Wave Overpressure from High-Speed Video
By Catherine Johnson, Kelly Williams
Advances in high-speed video imaging make it possible to see the refraction of light due to the high-density gradient at the shock front without the need for parabolic mirrors or additional light sour
Feb 1, 2020
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A New Approach to the Shock Energy/Gas Energy Concept
By Thierry Bernard
Today, experimental measurement of the shock energy/gas energy pair, or pool test, has now become virtually standard. But pool" energy per m(exp 3) of bedrock has no significance for explosives used i
Jan 1, 1994
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Blasting Topologies for Electronic Initiation Systems
By D. Lansburg
Electronic detonators are increasingly being used in today’s blasting in quarries, seismic, surface and underground mines. Electronic detonators offer several distinctive features over electric and no
Jan 1, 2011
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Application of Rudimentary Signature Hole Analysis
By Michael Laing
Blasting regulation and restrictions are tougher today than ever before. When blasting in population centers, strict limitations are often placed on the environmental effects caused by blasting, more
Jan 1, 2017
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Computational Fluid Dynamics (CFD) Versus Traditional Methodologies to Assess Airblast from Blasting
By Estefania Aramayo, Jhon Silva, Todor Petrov
Blasting is one of the most critical activities in a mining operation. Nowadays, many quarries have to follow a considerable quantity of environmental restrictions that drive the need to improve the c
Feb 6, 2023
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Examination of Timing Requirements for Optimization of Fragmentation Using Small Scale Grout Samples
By O Omidi
Selection of delay times to optimize fragmentation has been a controversial topic among researchers and blasting practitioners. This paper reviews previous experimental information and presents the re
Jan 1, 2014
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Blast Damage Predictions from Vibration Measurements at the SKB Underground Laboratories at ASPO in Sweden
By Conny Sjoberg, Finn Ouchterlony, Bjorn Jonsson
This contribution reports an investigation of the blasting damage in the contour of an access ramp to a Swedish underground laboratory for nuclear waste related studies. Near zone vibration measuremen
Jan 1, 1993
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Understanding Single Salt, Dual Salt, and Multiple Salt Bulk Emulsions and Emulsion Blends
By Dr. Bronwynne Victor, Quentin Steyl, D. Scott Scovira
Bulk emulsions and emulsion blends may be formulated with a single salt, dual salts, or multiple salts. Blasting professionals familiar with single salt ammonium nitrate emulsion products may be less
Feb 1, 2020
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Development of Scaled Damage Criteria for Blasting
By Jorge Alvarez
In a large-scale open-pit mining operation, continuous efforts are made to control damage to the slope walls. An essential tool in this effort is determining the PPVc (critical peak particle velocity)
Jan 21, 2025
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Efficient Blasting for Bench Stability and Fragmentation Results Improvement
By Javier Illanes Pizarro, Gustavo Huerta Valer, Jorge Cárdenas Miranda
Bench stability is the basis of sustainability in an open pit mining operation. Taking care of the pit walls while maintaining fragmentation results can prove a challenge. In this study, technical pro
Feb 6, 2023