The technical sessions will showcase the latest technological advances. Whether you're a blaster in the field or a supervisor, you'll find this an informative, enjoyable event. The following is a preliminary list of papers which will be presented in Nashville, Tenn. This program is subject to change.


 

A Human Variable in the Blast Design Parameters Usually Undervalued

This paper will examine the overall process from blast design to execution and results, looking at the role of the human factor in all aspects. How audit systems can combine with processes and systems to yield optimal training and leadership roles to optimize blasting processes and geotechnical risk classification.


A Look at the Different Methods to Conduct Signature Holes

This paper looks into the different ways to do a signature hole and how it influences the results of the signature hole analysis.


A Method to Measure Shock Front Curvature of Emulsion Explosives

This paper suggest a method measure the detonation front curvature and the velocity of detonation of explosives. The purpose for this is to increase the understanding of the detonation properties of emulsion explosives as used in many blasting operations around the world.

 


A Practical Guide for the Blasting of Armour Stone or Riprap

Industry best practice guidelines for the blasting of riprap or armour stone.


Accuracy of Blast Fume Emission Concentration Measurements Using an Unmanned Aerial Vehicle System

A gas monitor attached to an unmanned aerial vehicle system (UAS) may be capable of measuring blast fume concentrations at surface mines. Rotor downwash will artificially disturb the blast cloud, causing inaccuracies in measured concentration values. This paper develops a multiplication factor for adjusting UAS-measured concentrations to accommodate downwash interference.


An Engineering Approach to Analyzing Powder Factor Design

This paper analyzes the powder factor design approach, which is the most popular blast design approach currently applied today, analyzing the numerous ways that powder factor increases a mines direct drilling and blasting cost while failing to meet performance criteria.


AN Railcar Derailed Debris Collection – Data Analysis Update

A complete data analysis was completed on test data collected from an AN Railcar detonation. The analysis included an assessment of both the debris data and airblast data resulting from the test. This paper is meant to serve as a summary of the analysis and findings from the debris collection.


Application of an In-House Drill Monitoring System to Assess Geotechnical Rock Properties in Quarry Blasting

An in-house drill monitoring system is presented to monitor and record information of any drilling system. The MWD parameters have been combined to obtain a fracturing index to characterize rock properties. The index has been assessed against photographic records of the blastholes walls made with an optical televiewer


Application of Geostatistical Tools in Measurement While Drilling to Assess Geotechnical Rock Conditions and Chargeability Issues in Sublevel Caving

Development of a geotechnical rock condition block model and a predicting risk of blasthole collapse model with reference to MWD records and application of geoestatistical tools to estimate values in all the points of the studied domain and not only in the sampled points.


Assessment of Fracture Extension Produced by Blasting using the Displacement Discontinuity Method

This paper will investigate the ability of the Displacement Discontinuity Method to accurately predict the fracture extension surrounding a borehole post-blast, effectively calculating the practical damage radius.


Assessment of Post-Blast Damage Zones in Tunneling Operations Through Measurement while Drilling Records

The overbreak of the remaining rock mass in tunnel blasting has been analyzed in the light of MWD records, with the purpose of developing a prediction model of over- and under-excavation depths from blasting.


Attracting and Engaging the New Generations: An ISEE Student Chapter Case Study

How do the extractive and construction industries gain the interest of the younger generations and integrate them into the industry? The Virginia Tech Student Chapter of the International Society of Explosives Engineers handled this issue in recruitment efforts and event planning from 2017-2019.


Bingham Canyon Mine-Blasting Through and Next to Active Underground

The implementation of blasting practices and designs to collapse sections of an active underground while maintaining vibration limits below levels to protect workings that remain in use.


Blast Approximation Using Computational Fluid Dynamics and Porous Elements

Borehole geometry is a critical element is producing a desired crush zone in the burden. A potential method for approximating explosive-driven crush zones is using Computational Fluid Dynamics, where porous elements models the burden where the penetration and density of gas penetration corresponds to the degree of crush.


Blast Optimization Using Both the Multiple Blasthole Fragmentation (MBF) and Multiple Seed Waveforms (MSW) Models at an Open Pit Gold Mine in the USA

A blast optimization project was carried out at an Open Pit Mine in the USA using the MBF Model and the MSW blast vibration model. The MBF and MSW are each an integral part of the blast optimization tool. Various scenarios using different explosives, hole delays, blast patterns were modeled.


Blasting and Mine Digitization – Trends, Impacts, Implementation and Tips

The paper will explain the Digitization concept, define the place of blasting -i responsibility and opportunity, in the digitized mine, identify the center of gravity and will propose methods to integrate data from blasting and other spheres to identify opportunities by creating situational awareness for pushing the blasting contribution downstream.


Blasting Engineers/ Blasting Consultants and Blasters-in-Charge – Combat or Cooperation

Roles played by the Blasting Consultant, the Contract Specifications Writer and Blaster in Charge are critical to a properly conducted, safe blasting operation. Authors will review positives and negatives of the relationships.


Blasting Mitigation Measures Used to Control a Highwall Failure Risk

Blasting mitigation measures were used to control a highwall failure risk. This consisted in optimizing the blasting parameters which would not induce the highwall failure and in evaluating the rock mass response to blasting by using radar. The risk management plan was successful because blasting didn't induce highwall failure.


Blasting Optimization of a Road Cut Using Drilling Profiling and Photogrammetry

Roadwork required to expand a highway with minimum interruption to the traffic/vehicle flow. It was necessary to use advanced blast design software, blasthole profiling and 3D mapping of the face by photogrammetry.