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Feb 20, 2015· • the types of explosion are the following: mechanical electric nuclear chemical, from the mining point of view, only the last are of interest 3. blasting accessories • various important blasting accessories are as under: 1. safety fuse 2. plastic ignitor cord. 3. detonators. 4. cord relay 5. detonating cord 7. anodet 8. ohm meter 9.
oitted to Ecellence in Mining Safety Last Modified: Page: JAN 2013 2 of 21 MODULE 12 (C ONT.)Surface Blasting Safety Procedures Blasting Materials Surface delays, detonators or blasting caps, boosters, safety fuse, downline and other explosives used for blasting.
However, secondary blasting is the most expensive type of blasting. Appropriate blast design is important in order to lessen the production of over size. Secondary blasting can be done by pop shooting (blockholing) and plaster shooting (mudcapping). Shaped charges are sometime used in secondary blasting, but this is much more expensive. Cast ...
Microsoft PowerPoint Types of Explosives Author: naj Created Date: 3/8/2010 1:52:36 PM ...
Blasting Accessories * Couplers for Plastic Loading Pole. more. Blastmaster Shear with Case. more. Lowering Hooks for Hydromex. more. Magazine Signs on Rigid Plastic (English French) more. Priming (Powder) Punches (with Handles) more. Sirene mecanique. more. Measuring Tape Reel Only. more. Measuring Tape Fiberglass ...
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 CDROM.] Macdonald (1983). Alluvial Mining, 508 pp., Chapman and Hall (London ...
Nov 19, 2013· blasting 1. blasting most basic unit operation of any mining activity 2. objective • rock is blasted either to break in to smaller pieces such as in most mining and quarrying operations or large blocks for dimensional stone mining and some civil engineering application, or to create space.
Electronics specializes in development, production and sales of electronic equipment for the mining, blasting and defense industry. With more than than 20 years of experience, we produce blasting machines, mining ohmmeters, minefield surge protectors and measuring equipment. Guided by the motto: SAFE, SIMPLE, RELIABLE – Our mission is to ...
The economic analysis of the use of explosives is an important part of blasting operations in mining and construction. Explosives are energy, and the efficient use of this energy is a major factor in keeping rock blasting costs under control. Highenergy explosives enhance fragmentation, which ultimately produces a positive effect on production ...
Blasting on each sublevel starts at the hangingwall and mining then proceeds t oward the footwall. Blasting removes support for the hangingw all, which collapses into the drift.
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 nonelectric, instantaneous, and has a thin reactive powder that propagates the shock wave signal. Photograph courtesy of Mining Services International, Inc.
Surface Mining, Department of the Interior, located in Denver, Colorado. The module is an example of the technical assistance the Federal government furnishes States to assist them in meeting the requirements of the Surface Mining Control and Reclamation Act of 1977, upon which their State surface coalmine regulating programs are based.
JAn 203 1 of 21 Surface Blasting Safety Procedures. oitted to Ecellence in Mining Safety Last Modified Page JAN 2013 2 of 21 MODULE 12 (C ONT.)Surface Blasting Safety Procedures Blasting Materials Surface delays, detonators or blasting caps, boosters, safety fuse, downline and other explosives used for blasting.
BLAST DESIGN . c•A. trial blast should always be performed. It will either validate the initial assumptions or provide the information needed for final blast design. ~~ The . most critical dimension in blast design is the burden distance as shown in Figure 1 (Fig 131, Text) ct .
The drill and blast method is the most widely used technique for rock excavation in tunnelling and underground projects. Its suitability for medium to hard ground conditions has been well recorded ...
Sep 04, 2019· Well, yes and no. From the ninth century AD (though the historians are still uncertain about the exact date of its invention) to the mid1800s, black powder was the only explosive available. A single type of explosives was therefore used as a propellant for guns and for blasting purpose in any military, mining and civil engineering application.
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 ...
Blasting Accessories * Couplers for Plastic Loading Pole. more. Blastmaster Shear with Case. more. Lowering Hooks for Hydromex. more. Magazine Signs on Rigid Plastic (English French) more. Priming (Powder) Punches (with Handles) more. Sirene mecanique. more. Measuring Tape Reel Only. more ...
Optimization of blast is dependent on a host of complex factors related to the rock, explosive, initiation, drillhole 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 .
Aug 07, 2013· INTRODUCTION Blasting accessories Various products that are used in blasting, in addition to explosives and initiating devices. Few are consumed in the blast, but most of them are designed to be used in blasting repeatedly. 4.
Apr 21, 2012· BLASTING CAPS DEFINITION Small explosive device used to detonate a larger, more powerful explosive such as dynamite. 20. TOOLS FOR needle bar Dipper Used to drill hole to the required depth. Jumper Used to make blast hole more effective in boring a nearly vertical hole. Priming ...
Surface Mining, Department of the Interior, located in Denver, Colorado. The module is an example of the technical assistance the Federal government furnishes States to assist them in meeting the requirements of the Surface Mining Control and Reclamation Act of 1977, upon which their State surface coal mine regulating programs are based.
tion of ring blasting in different mining conditions. This paper focuses on the design and analysis process 1 De nitions of toe spacing 2 General approach to blast design Onederra and Chitombo Design methodology for underground ring blasting Mining Technology 2007 VOL 116 NO 4 181.
Glossary of Blasting Terms 13page reference document on blasting terms and their definitions. : Glossary of Blasting Terms Glossary of terms used in explosives and blasting. 230 Kb: Informational Bulletin An unexplained explosion occurred on a shotfirers light .
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