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Benchmarking Drill and Blast Compliance to Design, A Case StudyBy Alan Tordoir, Mark Roberts
The drill and blast process is a critical function within the production cycle which significantly impacts the ability of an operation to effectively meet its safety and production targets. Acknowledg
Jan 1, 2019
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The Largest Rock Fill Dam in the United StatesBy L. L. Oriard
he Metropolitan Water District of Southern California (MWD) supplies water to some 16 million people in a semi-arid region. Most of this water is imported. Some of the supply lines cross over the San
Jan 1, 2000
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Blast Design for Optimizing Fragmentation While Controlling Frequency of Ground VibrationBy Andrew P. Ritter, Douglas A. Anderson, Stephen R. Winzer
We have adopted a unified approach to blast design. Based on earlier research, we chose minimum relief of 3.4 ms/ft between holes in a row and 8.6 ms/ft between echelons to produce good fragmentation.
Jan 1, 1982
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ApplicationofArcGISProinBlast-InducedGroundVibrationAnalysisinanOpenPit CopperMineBy Yong Pan, Purushotham Tukkaraja
It has been well understood that blasting is the cost-effective method for breaking rocks as compared with the mechanical systems. However, vibrations induced by blasting in open-pit mines could pose
Jan 1, 2019
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Blasting Application With 50% of Used Oil in Emulsion FuelBy Dadan Munawar, Benny Gunawan
Blasting at Sebesi in Central Tutupan Pit area in South Kalimantan, Indonesia is planned to be using emulsion, where used oil makes up 50% of the total emulsion fuel. The significant amount of used oi
Jan 1, 2015
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The Effect of Discontinuity Orientation on the Success of Pre-Split BlastingPrevious approaches to pre-split blasting theory have tended to concentrate on the mathematics of dynamic stress wave interaction, whilst only recognizing some interaction with quasi-static stresses i
Jan 1, 1984
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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
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Fragmentation Measurement Results for Fourteen Full-Scale Production Blasts: A Comparison With a Three Dimensional Wave CodeBy Charles H. Dowding, Catherine T. Aimone
Rock particle sizes were measured at fourteen steep-slope Appalachian coal mines during production blasting. The distribution of rock sizes shows the effects of inter-hole timing, sequence of hole ini
Jan 1, 1983
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An Engineering Model for Predicting Rubble Motion During BlastingBy J T. Schamaun
Recent applications of explosives and blasting agents to rubble rock have led to requirements for more elaborate design and analysis methods. In most blasting uses, it is necessary not only to fractur
Jan 1, 1983
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Shaped Charge Induced Concrete Damage Predictions Using RHT Constitutive ModelingBy Dale S. Preece, Vanessa S. Berg
Shaped charges are being utilized in defense applications against a wider variety of targets including concrete, rock, and soil. This work was motivated by a heightened interest in characterizing the
Jan 1, 2004
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Improving Productivity in Pillar Blasting – HZL, Sindesar Khurd MineBy Deepankar Das, Gulshan Kumar Sadhwani, Jyoti Prakash Sahoo
Sindesar Khurd Mine (SKM), the largest underground mine in the Hindustan Zinc Limited portfolio, is located approximately 60 kilometers (37 miles) north of Udaipur. In the 2018 financial year SKM achi
Jan 1, 2019
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Evaluation of Velocity of Detonation of Permitted ExplosivesBy R R. Singh, U K. Dey, S K. Roy
"Commercial explosives being a heterogeneous mixture of many chemical compounds in prefixed proportion, their velocity of detonation (VOD) may vary from batch to batch, due to variations in the propor
Jan 1, 2007
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An Analysis and Prevention of Flyrock Accidents in Surface Blasting OperationsBy Thomas E. Lobb, Harry C. Verakis
Blasting is a primary means of extracting minerals and ores at surface mining operations. The domestic consumption of explosives and blasting agents during the year 2001 was about 5.25 billion pounds.
Jan 1, 2004
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Electronic Blast Initiation – The Evolving Perception of Australian Mining OperationsBy Greg Wyartt
Although electronic detonators and blast initiation systems have been commercially available for several decades, uptake in the Australian mining industry has been very slow when compared to other glo
Jan 1, 2019
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Portable Rock Fragmentation Sensing Using 3D ImagingBy Ian Bell, Shahram Tafazoli, Bahram Sameti, Aylin Azmin, Edmond Chow, Nima Ziraknejad
Image-based rock fragmentation analysis methods have been applied by blast engineers to estimate rock size distribution for over 25 years. These methods utilize a wide range of image segmentation tech
Jan 1, 2014
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To React Or Not To React? – Tis’a Fuelish Question!By Michael Wieland
Smoke/fume measurements from rapid transitory charge reactions are not wholly comparable with thermodynamic reaction code (TDRC) results, since quenched chemical reactions yield nonequilibrium concent
Jan 1, 2012
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High-Order Numerical Methods and Reaction Rate Law for Non-Ideal Detonation ModelingBy Eduardo Lozano, Vilem Petr
This study demonstrates the ability of high-order, shock-capturing methods to simulate detonation wave propagation in right circular cylinders of non-ideal explosives. 2-D axisymmetric, reactive Euler
Jan 1, 2019
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Debris Collection Efforts Following a Large-scale AN DetonationBy P. E. Hoffman, Joshua Ph. D.
The Institute of Makers of Explosives (IME) led a post-detonation debris collection project in conjunction with a large AN railcar detonation conducted by the Department of Homeland SecurityTransporta
Jan 1, 2019
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Underground Longhole Blasting near Large-diameter Booster FansBy Norm Disley, Kingsley Hortin, Gertjan Bekkers
As part of the expansion of the Kidd Creek Mine to 2,682 meters (8800 feet) below surface, two largediameter 3000kW (4000HP) booster fans were installed at the 6000 level. Shortly after commissioning
Jan 1, 2008
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Auditing Underground Development Drilling and BlastingBy Thomas L. Barkley
My historic auditing of Underground Drilling and Blasting Practices has demonstrated to the author the need for reviews of many mines' procedures in these processes. Poor understanding of the basic pr
Jan 1, 2019