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Controlled Blasting in Natural Geotechnical Structures (cavities) at the Hierro Mine - Brazil
By Sérgio Augusto Ferreira, Alan Gerson Diaz Butron, Carlos E. Arroyo, Marcus Neves, Jorhs Enrique Casimiro Huayhua, Dieggo Santos, Eventomar Junior
The presence of natural underground cavities is normally a characteristic of iron ore deposits, specifically in tropical deposits. Brazil and the United States are the only countries that have a legis
Feb 6, 2023
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Drilling Cost Optimization by Using a Water-Powered Drilling Technique at an Underground Sublevel Stoping Operation
By Alexandra Yuyali
The objective of this research work is to increase the drilling ratio represented in tons per drilled meter (ton/m) to reduce mining costs. One of the key characteristics of this research is the use o
Jan 21, 2025
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Natural Cavities in Iron Ore Deposits in Brazilian Northern Region: Challenges and Strategies
By Anderson Meireles, Leonardo Soares Chaves, Raul Carretero Hoz, Carlos Eduardo Soares Feliciano, Renato Jacome Costa
The large iron deposits in the northern region of Brazil located in the Amazon Craton have in common the presence of natural cavities. These cavities primarily occur in the upper layer of the ore body
Jan 21, 2025
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An Empirical Method of Comparing Brisance of Various Bulk Explosives
By Neal Lee, Braden T. Lusk, Brendan McCray
"Selection of a blasting agent for optimum performance is based on many variables. Often, a decision is made with regard to product cost and field testing. Defining optimum performance can be difficul
Jan 1, 2017
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Automatic 3D Fragmentation Analysis from Drone Imagery
By Andreas Gaich
A new 3D fragmentation analysis method for muck piles is presented. It works with aerial imagery from UAVs (drones) and handles entire muck piles with minimum user intervention.
Feb 1, 2020
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Occidental's New Explosive Technology in Oil Shale
By Thomas E. Ricketts
Occidental Oil Shale Inc. has spent the last eight years at its Logan Wash. mine near DeBeque, Colorado, developing its modified in-situ oil shale process for obtaining oil from oil shale. Modified in
Jan 1, 1981
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Explosive Operations for Constructing a Tunnel Based PCB Collection System
By Gerard McAlinden, Daniel Frost, Patrick McAlinden, James McAlinden
In an effort to recover Polychlorinated biphenyls (PCB’s) that had leached into bedrock below the Hudson River in Upstate New York, a shaft and tunnel complex was designed that would allow installatio
Jan 1, 2010
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Investigation of Blasting Fumes using Numerical Simulation
By Sunil Vytla, Akash Adhikari, Purushotham Tukkaraja
Blasting operations produces gases and fumes that may be toxic or non-toxic in nature. A detonation of commercial explosives such as ANFO, emulsion, and dynamite would ideally produce only nontoxic pr
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Structure Responses to a Confined Opening Cut Blast, Sumterville, FL
By Jeff Senules, Oana Meins, Catherine Aimone-Martin, Scott Lanker, Brent Meins
Global wall strains from 4 to 77 micro-strains were measured at three structures adjacent to a highly-confined Florida quarry blast when PPV amplitudes ranged up to 6.05 in/s. Increasing the peak zero
Feb 1, 2020
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Aquarium Tests to Study the Detonation Behaviour of a Non-ideal Explosive.
By M. Araos
Non-ideal explosives can be characterised by different methods like velocity of detonation measurement, double pipe tests, underwater tests, aquarium tests, etc., to name a few. Both aquarium and velo
Jan 1, 2024
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All In The Timing
By Sean Paterson
The purpose of this paper is to demonstrate a method of delaying and loading a shot. Since entering the construction industry, I have learned that cover is needed on a lot of blasts. When in close hav
Jan 1, 2001
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A Study of the Impact of Explosive Quality on Blast Performance
By Alastair Torrance
The performance of commercial explosives is clearly influenced by the conditions under which they are used. Mining companies are supplied with Technical Data Sheets which provide details about explosi
Jan 1, 2013
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Rock Slope Remediation on the Pennsylvania Turnpike Bedford, Pennsylvania
By Ron Woolf, Corry Goumans
This paper describes rock slope remediation performed along America’s first Superhighway, the Pennsylvania Turnpike and in particular, the specialized drilling equipment designed and built by Pacific
Jan 1, 2001
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Shock Tube Detonator Shelf Life in Relation to Timing Accuracy
By Joshua Hoffman, Philip Mulligan, Braden Lusk, Tristan Worsey
Blasters rely upon detonators to achieve the designed timing sequence to move material where it needs to go, minimize vibration, or optimize fragmentation. At times detonator inventory on seldom used
Jan 1, 2013
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"Fast Rock Segmentation Using Artificial Intelligence to Approach Human-LevelAccuracy"
By Ian Bell, Saman Nouranian, Shahram Tafazoli, Bahram Sameti, Mahdi Ramezani
"Image-based rock fragmentation sensing in mining and quarry applications includes an important rock boundary delineation step, which is commonly referred to as rock segmentation. This paper presents
Jan 1, 2017
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Methane-air Mixture Air-blast Approximated Using Detonating Cord in Rock Dust Dispersibility Studies
By BruneJurgen F., Richard C. Gilmore, Matthew Schreiner, Ray Johnson
Explosive pockets of methane-air mixtures accumulate in underground coal mines and, when ignited, produce an air-blast wave that can disturb combustible coal dust on the floor, roof, and ribs. To prev
Jan 1, 2019
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Improved Remediation Performance of a Contaminated Basalt Aquifer by Blast Fracturing
By Adrian Moore, Bryan Goodwin, David Fales, David Lam
This paper describes the development of blasting protocols used to successfully create a 450m long blast fractured permeable trench in a basalt aquifer up to 20m thick, at a petrochemical facility in
Jan 1, 2011
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Modeling An Artificial Screen For Reducing Seismic Vibration
By Lazar Kricak, Vladislav Kecojevic, Dragan Bogunovic
In spite of many advantages explosives have, their usage may cause environmental problem such as seismic vibration. One of the solutions to this particular problem may be application of an artificial
Jan 1, 2007
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Demolition of Churchill House in Belfast, Ireland
By Dick Green
During the recent troubles in Northern Ireland due to terrorist activities, there have been many buildings demolished or damaged by improvised explosives. This article explains about the Demolition of
Jan 1, 2006
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Controlled Hard Rock Trench Blasting Close to a Buried Gas Pipeline under Pressure
By M. Ganster
Austria’s biggest supplier of oil and gas, transports gas through the West Austria Gasline for domestic consumption. In addition, the OMV also works as gas carrier and ensures the transit into neighbo
Jan 1, 2010