23 slides. Explosives and Blasting Agents Transportation. Covers relevant provisions of 29 CFR 1910.109. 21 slides. Safe Introduction of Electronic Detonators. From the Ensign-Bickford Company, this presentation cover safety precautions which apply to detonators. 15 slides. The History of Explosives.
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Apr 04, 2017 Between 1994 and 2005, eight miners were injured by exposure to blasting fumes. Surface blasting breaks up rock and frequently throws rock away from the blast site. Mine workers may be killed or injured by rock thrown by a blast. The blaster who designs a blast determines how far rock from the blast is expected to go.
Blasting is the controlled use of explosives to excavate or remove rock. It is a technique used most often in mining and civil engineering. Ensuring that all personnel have evacuated the Blast Area during shot firing. ... Save Save Blasting_Awareness.ppt For Later. 100% (1) 100% found this document useful (1 vote) 21 views 74 pages.
Download Free PPT. Download Free PDF. MINIMIZATION OF BOULDERS DURING BLASTING AT OPEN PIT ... This are used in mining activities ANFO - is the mixture of Ammonium Nitrate and Fuel Oil in the specific ratio. ... namely 1.Drilling parameters 2.Blasting parameters 1.DRILLING PARAMETERS Burden Spacing Hole diameter Hole depth Sub-drill 2.BLASTING ...
blasting instructor. DISCLAIMER The technologies described in the module are for information purposes only. The mention herein, of the technologies, companies, or any brand names, does not constitute endorsement by the U.S. Department of the Interiors Office of Surface Mining.
The new blast design concept applies the understanding of radial damage that is caused by the buffer hole column charge. Buffer hole radial damage is defined by a practical damage limit applied to the rock lying between the buffer holes and the perimeter. A favorable ...
Designing Blast Patterns Using Empirical Formulas A Comparison of Calculated Patterns With Plans Used in Quarrying Limestone and Dolomite, With Geologic Considerations By Joseph M. Pugliese Twin Cities Mining Research Center, Minneapolis, Minn . . US Department of Interior Office of Surface Mining Reclamation and Enforcement Kenneth K ...
the individual blast holes is regulated by the initiation system. zPlastic shock tubes or electric caps using a timing system are generally employed. zA shock tube is non-electric, instantaneous, and has a thin reactive powder that propagates the shock wave signal. Photograph courtesy of Mining Services International , Inc.
Blast Pattern The plan view of the drill holes as laid out for blasting. Blast Plan A written procedure that details the methods and manner by which a Project blaster will comply with pertinent laws, rules, regulations, and contract documents. The plan shall include all information, as detailed in Section 2A, necessary to evaluate the ...
Lecture 28 Surface blasting-1 Lecture 29 Surface blasting-2 Lecture 30 Surface blast design MODULE 7. Lecture 31 Underground blast design-1 Lecture 32 Underground blast design-2 Lecture 33 Blasting results-1 Lecture 34 Blasting results-2 Lecture 35 Blasting results-3 MODULE 8. Lecture 36 Blasting results-4 Lecture 37 ...
Blaster Training Module 1. This module presents information pertaining to the classification and properties of explosive products used in surface coal mines and quarries. 38 Mb. Blaster Training Module 2. This module presents information pertaining to initiation systems currently used in blasting operations at surface coal mines. 11.8 Mb.
Introduction. Blasting tunnels (or drifts) is a necessity in all underground mining operations. Drill and blast techniques are the most conventional and common method and is most useful in high UCS and homogeneous rock types albeit slower than other methods.
Chapter 19 BLAST DESIGN Introduction This chapter is an introduction to blasting techniques based primarily on the Explosives and Blasting Procedures Manual (Dick et al., 1987) and the Blasters Handbook (E.I. du Pont de Nemours Co., Inc., 1978). Blast design is not a
In underground blasting, the pull of the initial cut is the limiting factor for the success of the rest of the round. By improving the pull of the first cut, a critical step is made towards improving the entire round. This project attempted to optimize a burn cuts effective pull by varying the depths of the relief holes in the burn, and then
Apr 30, 2013 Blasting Technology Solutions for Mining InfoMine. Following are the different types of controlled blasting techniques Pre-Splitting this is an old but highly recognized technique with the purpose to form a fracture ... Blasting (ppt) Blasting w/ proper techniques 1 ...
18 AEL Intelligent Blasting EXPLOSIVES AELs S200 Eco base emulsion is used in surface mining applications within most geological conditions, but can also be used in hot-hole blasting applications. The formulation is able to inhibit the thermal effect within the hot-hole blast column in order to provide a safety window
enhance the safe, effective, and efficient use of blasting technology by the mining industry. Recent research results of the surface mine blast ing program were presented at a seminar on April 15, 1987, in Chicago, IL. Many of the topics discussed at the seminar are presented in this
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Blasting is very important process for mining operation and a lot of explosive is used for this purpose. The blasting process and usage of explosives, however, remain a potential source of numerous human and environmental hazards. Various studies indicate that fragmentation accounts for only 20-30% of the total amount of explosive energy used. ...
Mar 01, 2015 17. Feature. Introduction. Drilling and blasting continues to be an important method of rock. excavation and rock break ing 1-2. The term rock fragmentation is. an index that is used to ...
Lecture 11 DRILLING TECHNOLOGY FOR SURFACE BLASTING - I Download 12 Lecture 12 DRILLING TECHNOLOGY FOR SURFACE BLASTING - II Download 13 Lecture 13 DRILLING TECHNOLOGY FOR SURFACE BLASTING - III Download 14 Lecture 14 DRILLING TECHNOLOGY FOR SURFACE BLASTING - IV Download 15 Lecture 15 TECHNOLOGY
Mining Engineering Handbook, 2 nd Ed. 2170 pp., Society for Mining, Metallurgy, and Exploration, Inc. (Littleton, USA). A comprehensive handbook for mining engineering, including general descriptions of mining practices and many case studies. Also available in a CD-ROM. Macdonald E.H. (1983). Alluvial Mining, 508 pp., Chapman and Hall (London ...
Jan 01, 2012 Zong-Xian Zhang, in Rock Fracture and Blasting, 2016. 21.5.2 To Increase Explosive Energy in Blasting. The preceding analysis indicates that an increase in drilling and blasting energy can increase the efficiency of total energy in the whole size reduction system. Moreover, a total of 210 blast tests show that the specific surface created by blasting in the
On surface mining, blasting technique may be considered as the most economical method used for fragmenting rocks masses. Nonetheless, only 20-30% of the used energy is served for rocks fragmenting and displacing, while the rest is wasted in the form of ground vibration, air
Oct 26, 2016 Ground vibrations originating from bench blasting may cause damage to slopes, structures, and underground workings in close proximity to an operating open-pit mine. It is important to monitor and predict ground vibration levels induced by blasting and to take measures to reduce their hazardous effects. The aims of this paper are to determine the
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blast solutions throughout the mining, quarrying and construction markets. Blast Management Design. About Oricas Commercial Blasting Courses . Contact Information. For further assistance please contact Customer Service on 1300 303 797, your local Technical Services Engineer or your local Orica representative.
The first way in which proposed mining projects differ is the proposed method of moving or excavating the overburden. What follows are brief descriptions of the most common methods. 22.214.171.124 Open-pit mining Open-pit mining is a type of strip mining in which the ore deposit extends very deep in the ground,
Optimization of blast is dependent on a host of complex factors related to the rock, explosive, initiation, drill-hole parameters and their layout. The present work is a step in the direction of developing a suitable blast model, with simple methodologies which can be adapted by the mining industry to achieve better blasting results.
The mining industry has focused a great deal of attention recently on the impact of blast movement on grade control. Although the problem of blast movement and its contribution to dilution and ore loss is well known, solutions to the problem are less than satisfactory. Perhaps
A long hole stoping system for mining narrow platinum reefs The Journal of The South African Institute of Mining and Metallurgy APRIL 2002 153 Figure 4Project Site Production Plan Actual Face advance 2 m per blast 1.5 m per blast Metres per shift 125 m 105 m Square metres per shift 60 m 240 m Hole deflection 75 mm/15 m 45 mm/15 m
Medda A. and others - The precision of long hole drilling with modern machines in mining operations, Rock Fragmentation by Blasting Symposium, Lulea,
Reading time 1 minute The main objectives of controlled blasting techniques are to minimize the overbreak and fracturing of rock beyond the designated boundary of excavation to achieve smooth post-blast surface and to control wild flyrock and ground vibration within permissible limits. This objective is normally achieved by minimizing and making judicious use of
Copper slag is a by-product created during the copper smelting and refining process. As refineries draw metal out of copper ore, they produce a large volume of non-metallic dust, soot, and rock. Collectively, these materials make up slag, which can be used for a surprising number of applications in the building and industrial fields.