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Anfo Versus 100% Emulsion: Quantitative Assessment of Performance With Constant Drilling and Blasting CostsBy Neal Lee, Braden Lusk, John Silva Castro
One of the most common assumptions regarding the use of ANFO versus utilizing 100% sensitized emulsion is that ANFO “turns over” the muck-pile better, due to the “higher gas volume” supposedly inheren
Jan 1, 2012
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History of the Development and Use of Bulk Loaded Explosives, from Black Powder to EmulsionsBy Robert B. Hopler
The history of bulk loaded explosives begins with the loading of black powder and RRP (Railroad Powder) into vertical boreholes. The early air place, net of black powder and nitrostarch dynamites is c
Jan 1, 1993
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Vibration and Flyrock Control Through Better PredictionsBy Daodu Opeyemi
This paper describes several damages of blasting operations on some case studies, analyzes causative factors, and emphasizes preventive measures. Due to several complaints from some host mining commun
Jan 1, 2009
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Northern Link - Tunnel Blasting In Environmentally Sensitive Surroundings - Using NCVIBBy Donald Jonson
Stockholm’s Northern Link, currently Europe’s largest urban road tunnel project, will be about 5 km long from west to east. Running through two separate, mostly parallel tunnels, each with 2-4 lanes,
Jan 1, 2009
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The Use of High-Speed Motion Picture Photography in Blast Evaluation and Design (23c6f2b6-16c1-4f76-b2cd-4d87a79d67ba)By P J. Dailey, S L. Burchell, R F. Chiappetta
High-speed motion picture photography and its application to the mining, quarry, construction, and explosive industries has proven to be a valuable diagnostic tool. The techniques developed allow one
Jan 1, 1983
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Ground Reaction Time Measurement and Modelling for Improved Blast OutcomesBy Richard Turnbull
Maules Creek mine is an open cut coal near Boggabri in the Gunnedah Basin of New South Wales, Australia. The mine is currently operating at an annualised run rate of 9.5Mt of saleable coal. The plan i
Jan 1, 2018
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Design Criteria for In-Situ Mining of Hard Rock Ore DepositsBy M E. Hanson, K Chong, R H. Jacobson, S C. Way
To create conditions for economic rates of mineral recovery in a deep, hard rock mass, enhancement of naturally occurring permeability is necessary, and may be achieved through explosives detonated in
Jan 1, 1983
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Geologic Considerations in BlastingBy Michael Laing
"Geology plays a critical role in many aspects of blasting, from fragmentation to wall control. One often overlooked component of blasting concerns blast results due to the effect of geologic features
Jan 1, 2016
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A Case Study Examination of Two Blast Rounds at a Nevada Gold MineBy Joel Warneke, Cristian Caceres, Ed Mchugh
NIOSH researchers collected basic data from two blast rounds at the SSX-Steer Mine as a component of a larger study on controlled blasting, the goal of which is to reduce injuries from falling rocks i
Jan 1, 2008
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Vibration Control Using a Smartphone- Accuracy, Validation and PotentialitiesBy Francisco Sena Leite, Vinicius Miranda
Mine blasting is directly associated with ground vibration. If these affect critical structures (buildings pit walls, etc.) they must be mitigated to reduce the environment and social impacts. Vibrati
Jan 1, 2018
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E7B Sector Drilling and Blasting Challenges and LearningsBy Robert Jacob Cefalo, Rio Tinto Kennecott
At the end of 2016, the Mine started a new ore phase in the section of the pit located on the East Wall. The East Wall geological structures required controlled blasting for peak particle velocity (PP
Jan 1, 2019
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Field-scale modelling of blasting in Kimberlite using the Hybrid Stress Blasting ModelBy Italo Onederra, Jason Furtney, Ewan Sellers
The Hybrid Stress Blasting Model (HSBM) is a high level blast modelling research tool which provides results that can still be used implicitly for practical blast design. The code is being developed t
Jan 1, 2012
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Understanding Blast Movement and its impacts on Grade Control at Ahafo Gold Mine in GhanaBy Wayne Rogers, Sarma Kanchibotla, Alan Tordoir, Bryon Bisiauz, Seth Ako, Eric Engmann
Blast induced rock mass displacement can have a significant impact on ore loss & dilution. The mischaracterization of the grade boundaries both prior to, as well as a result of blasting can lead to si
Jan 1, 2012
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Lessons Learned from Blasting in Highly Weathered SandstoneBy Tyler Rockley, Greg Bailey
This paper is an engineering case study of a blast performed on a highly weathered sandstone isthmus in an area sensitive to vibration and airblast, the challenges associated with such a blast, the me
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Overlapping Timing Analysis for a Single Blast HoleBy Joshua Micah Hoffman, Lifeng Li, Jhon Silva-Castro
Since millisecond detonators were first introduced, at least two variables among others have been more closely considered when timing a mining blast; the accuracy and the precision of the initiation s
Jan 1, 2015
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Blasting Related Aggregate Size OptimizationBy John Cory, Ran Tamir
Blasting data analytics are being increasing used to increase mining productivity, reduce mining costs, maximize high margin aggregate products, and to reduce fines. Three examples will be illustrated
Jan 1, 2012
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New Development of Gassed Emulsion Explosive for Cost Optimization and Environmental ControlBy Yessica Idrogo, Omar Gómez, Francisco Pérez, Eduardo Yrigoyen
Rock blasting is one of the most important operations in the mining cycle value chain, requiring optimized explosives mixtures to get good results. A new and better strategy, and that which is discuss
Jan 1, 2019
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Journal: Safety Talk / Highwall Safety from a Blaster’s PerspectiveBy W. Reisz
The fear of heights is a natural defense against performing a dangerous and unnatural act such as standing on the edge of a hundred foot wall. Yet through familiarity, a casual attitude often exists.
Jan 1, 2009
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Journal: 100 Years / E.I. du Pont de Nemours Powder Co. Wilmington, Del 1910By Robert Hopler
INTRODUCTION NOT so very many years ago the farm was about the last place where one would expect to find up-to-date mechanical appliances. Steam, explosives, electricity—the factors which have made th
Jan 1, 2011
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Emperical Characterization of Oil Shale Cratering ExperimentsBy K Lombardo
Numerous small- and intermediate-size cratering experiments have been conducted in Piceance Creek Basin oil shale at the Colony and Anvil Points oil shale mines near Rifle, Colorado. The purpose of th
Jan 1, 1983