Search Documents
Search Again
Search Again
Refine Search
Refine Search
-
Repumpable Emulsion/ANFO Blends: the Best of Both Worlds
By Todd B. Harrington, Dennis M. Lydon, Walter B. Sudweeks
Heavy ANFO products made by mixing ANFO (or AN prills) with a relatively small amount of emulsion (typically 15-30 percent) have become very popular in recent years. They are less expensive than strai
Jan 1, 1989
-
Shock Physics Theory of Air-Deck Behavior during Rock Blasting
By Dale S. Preece, Ruilin Yang
"Air-decking has been used frequently in blasting for many decades. It has been asserted that an air-deckcan alleviate excessive shock pressure from the detonation of a charge thereby producing better
Jan 1, 2017
-
Journal: Safety Talk / The Safety of Electronic Initiation Systems
By Wm. Reisz, Raphael Trousselle
We are now well into our second decade of commercially available electronic initiation systems. Over this time, the technological advances have made electronic systems a very practical option for a wi
Jan 1, 2011
-
Signature Hole Method for Ground Vibration and Airblast in Mine Blasting; Convolution or Superposition?
By B T. Lusk, John J. Silva Castro
The signature hole method uses a convolution operation to predict the waveform of a production blast based on the record of a waveform produced by a single blast hole. Convolution is a mathematical op
Jan 1, 2014
-
Journal: Blastserve A Discussion Forum for ISEE Members
Drilling through unconsolidated material I need to drill blastholes through a mix of consolidated and unconsolidated material. This material is hung up in an underground ore pass. The total length of
Jan 1, 2011
-
Journal: Blastserve, Look for the New Online Blasters Forum!
Blastserve, ISEE’s Listserve is being replaced by our new Blasters Forum-online, an exclusive member benefit. Our goal is to provide an ISEE forum for you to network with your peers and exchange techn
Jan 1, 2013
-
Time-retarded Chemistry Tweaks Shock/heave Ratio
By Michael Wieland
Work-principle computations for explosions underwater or in rock reveal the way the thermodynamic characteristics of surrounding material influence the resulting shock and heave. To reach total thermo
Jan 1, 2008
-
A Blasting-induced vibration control approach for resuming blasting activity near tailing dams in the Quadrilátero Ferrifero region after “Brumadinho Dam Colapse”.
By Marcus Neves, Eventomar Junior, Adilson Castro, Leandro Silveira, Sérgio Augusto
The collapse of the Vale S.A. mining tailings dam in 2019, a tragic event that shook Brazil and the world, had consequences that transcended the immediate pain and devastation. Among them, the suspens
Jan 21, 2025
-
The Mitigation Effects of a Barrier Wall on Blast Wave Pressures
By Nathan Rouse
This blast mitigation study examined the effects of a barrier wall on explosively driven pressures. This area of blast mitigation is of interest due to the many different applications involved in prot
Jan 1, 2012
-
A New Integrated Workflow to Increase Drilling Accuracy using Post Process Kinematics(PPK) Drones and Smart Drills
By Ravi Sahu, Kris Jeremiah
This paper aims to study the benefits of using Post Processed Kinematics(PPK) surveying methodology combined with Drone photogrammetry to achieve highly precise positioning (X, Y, Z) of drill holes b
Feb 1, 2020
-
What Broke the Burden? Improving our Understanding of Burden Breakout.
By Mauritz Kotze, Jason Furtney, Ewan Sellers, Sandy Etchells, Tom Szendrei
The development of a simple model for gas flow and burden movement has driven the need to improve our understanding of burden breakage mechanisms for single hole blasts and the interaction between mul
Jan 1, 2013
-
The Importance of Internships for Explosives Engineering Students
By Paul Worsey, Gillian Worsey
The explosives industry is about to reach a critical turning point in human resources. The average age of employees of the largest US explosives company is over 50 and an estimated 5,000 engineers are
Jan 1, 2014
-
A Comparison of Theoretical Calculations to Hydro code-simulated Variables to assist in the Design of Mousetrap-type Planar Detonation Wave Generators
By Clayton Thompson
Linear detonation wave generators (DWGs) shape a detonation wave so that every portion of the wavefront reaches the target “line” simultaneously. A projection-type linear DWG uses Gurney plate velocit
Jan 1, 2011
-
Optimized Blasting Methods for TBM Launching Shaft Construction Beneath the Panama Canal: A Case Study
By Jose Pineda, Abraham Lindo
The Panama Metro System’s Network expansion involves excavating a launching shaft for a tunnel boring machine (TBM) to traverse beneath the Panama Canal. The blasting needed for this shaft constructio
Jan 21, 2025
-
Numerical Investigation of Blasting Fume Characteristics in a Block Caving Mine
By Yong Pan, Purushotham Tukkaraja
Block caving is a preferred underground mining technique due to its high production rate and low operation cost. Before its final step into a mature caving system using gravity to break rock, drilling
-
Numerical Investigation of Blasting Fume Characteristics in a Block Caving Mine
By Yong Pan, Purushotham Tukkaraja
In this paper, CFD was used to investigate the blasting toxic fume characteristics under different entrapping percentages and under changing muck pile properties like broken rock size and porosity. It
Feb 1, 2020
-
Reducing Impact on the Wall Generated by Blasting and Increasing Slope Design Adherence Using Controlled-Energy Explosives and Presplitting Technique
By Orica Chile, Orica Brasil, Orica Brasil Victor Morais, Kinross Paracatu Leopoldo Muñoz, Kinross Paracatu Luis Marinho, Gubio Barsottini, Orica Brasil José Vergara, Lucas Steffen, Orica Brasil Washington Vilas
In drill and blast activities, it has been a challenge to sculpt walls accordingly to what has been designed in state-of-art mining design software. Obviously, the perfection of making neat and smooth
Feb 6, 2023
-
Bingham Canyon Mine-Blasting Through and Next to Active Underground
By Robert Jacob Cefalo
In 2019, the Bingham Canyon Mine, owned by Rio Tinto Kennecott Utah Copper Company, mined through the active underground that dewaters the pit. The active underground required the limitation of vibrat
Feb 1, 2020
-
Use of Electric Field Measurement and a Weather Data Service for Lightning Warning at the US Bureau of Mines' Pittsburgh Research Center
By Lon D. Santis
This paper describes a lightning warning system (LWS) in operation at the U.S. Bureau of Mines' (USBM) Pittsburgh Research Center (PRC) from December, 1989 to April, 1991. An electric field mill measu
Jan 1, 1993
-
Preventing Blast Damage to Underground Infrastructure from Open Pit Operations
By C. Liley
Open cut blasting at the Ernest Henry mine has the potential to cause damage to nearby underground workings. This paper is a case study of the blast vibration management project which was conducted to
Jan 1, 2012