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Wednesday, May 20, 2020 | History

3 edition of Application of shaped explosive charges to mining operations found in the catalog.

Application of shaped explosive charges to mining operations

Robert Strong Lewis

Application of shaped explosive charges to mining operations

tests on steel and rock,"

by Robert Strong Lewis

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Published in Salt Lake City, Utah .
Written in English

    Subjects:
  • Blasting.

  • Edition Notes

    Statementby Robert S. Lewis and George B. Clark.
    SeriesUtah. University. Dept. of mining engineering. Bulletin,, no. 1
    ContributionsClark, George Bromley, 1912- , joint author.
    Classifications
    LC ClassificationsTN279 .L4
    The Physical Object
    Pagination48 p.
    Number of Pages48
    ID Numbers
    Open LibraryOL6505910M
    LC Control Number46027526
    OCLC/WorldCa3915690

    Today, virtually all U.S. countermine operations focus on waters =40 ft in depth. Current carrier battle groups (CVBGs) and amphibious ready groups (ARGs) deploy with capabilities to plan and execute the first four phases of countermine warfare which involve measures intended to prevent mines from entering the water. Sample Gold and Sulphide Minerals. Parenthetically, it should be noted that placers chiefly valuable for minerals such as monazite, rutile, cassiterite, ilmenite, etc., are generally easier to sample and evaluate than gold placers. There are several reasons. First, the valuable mineral makes up a larger part of the mass. Second, the mineral.

    RII - Certificate IV in Surface Coal Mining (Open Cut Examiner) Certificate IV in Surface Coal Mining (Open Cut Examiner) It includes planning and preparing for and supporting of blast site operations. Application of the Unit. Prime, load, stem and tie in the explosive in accordance with instructions. Carry out site clean.   Lecture 4: Underground Mining 1. Hassan Z. Harraz [email protected] This material is intended for use in lectures, presentations and as handouts to students, and is provided in Power point format so as to allow customization for the individual needs of course instructors.

    60 Where the concentration of an air contaminant or mixture of air contaminants exceeds fifty per cent of its lower explosive limit, an employer shall ensure that all sources of ignition are isolated and shall not permit any person to enter or remain in the affected area, except in the case of an emergency when adequately trained personnel equipped with self-contained breathing . Under such conditions the pillar begins to yield, and fragments of mineral fly off with explosive violence, exactly as a specimen of rock will splinter under pressure in a testing machine. 0 This seems to be due to the dust abundantly produced in mining operations, and especially by machine drills when boring " dry " (rising) blast holes.


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Application of shaped explosive charges to mining operations by Robert Strong Lewis Download PDF EPUB FB2

Shaped charges are used in not only military but also civil engineering. For example, a shaped charge can be used to create a long crack in oil exploration, to cut a large or thick metal structure that is difficult to cut by common methods, and to break a rock or concrete block.

A shaped charge is usually a conical shape, as shown in Fig. From the ninth century AD (though the historians are still uncertain about the exact date of its invention) to the mids, 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 : Philippe Dozolme. A shaped charge is an explosive charge shaped to focus the effect of the explosive's energy.

Various types are used to cut and form metal, initiate nuclear weapons, penetrate armor, and perforate wells in the oil and gas industry.

A typical modern shaped charge, with a metal liner on the charge cavity, can penetrate armor steel to a depth of seven or more times the diameter of. Full text of "Theory and application of shaped charges." See other formats. Federal Explosives Licensees.

Explosives industry members play an integral role in maintaining and improving our quality of life in the United States and work to bring countless benefits to our everyday lives in areas such as mining, oil and gas exploration; demolition; avalanche control; and the use of explosives in special industrial tools, fire extinguishers, air bag inflators, fireworks.

commercial Application of shaped explosive charges to mining operations book ranges from to g/cc. For free running explosives, the density is often specified as the pounds of explosives per foot of charge length in a given size borehole.

With few exceptions, denser explosives give higher detonation velocities and pressures. Density is an important consideration when choosing an explosive. Blasting and mining. Raleke Chinedu application of explosive energy. There are other benefits from c ontent on the impulse from shallow buried explosive charges.

In: 14th. Explosives and Detonators 1 Types of explosive Definition of explosives An explosive is a substance which, when properly initiated, is very rapidly converted to gases at high temperature and pressure.

This process is called detonation. A litre of modern high explosive. A naval mine is a self-contained explosive device placed in water to damage or destroy surface ships or depth charges, mines are deposited and left to wait until they are triggered by the approach of, or contact with, any mines can be used offensively, to hamper enemy shipping movements or lock vessels into a harbour; or defensively, to protect.

Literature on Explosives and Blasting. shaped charges, and the science of detonation. Application of the explosive nondestructive pulsed stressing to the labradorite samples with.

INTRODUCTION TO MINING MINING’S CONTRIBUTION TO CIVILIZATION Mining may well have been the second of humankind’s earliest endeavors— granted that agriculture was the first. The two industries ranked together as the primary or.

An explosive (or explosive material) is a reactive substance that contains a great amount of potential energy that can produce an explosion if released suddenly, usually accompanied by the production of light, heat, sound, and explosive charge is a measured quantity of explosive material, which may either be composed solely of one ingredient or be a mixture.

(2) Subject to subsection (4), where a decision is made to discontinue or suspend operations at a mine or mining plant, notice shall be given forthwith to an inspector. R.R.O.Reg.s. 23 (2). (3) Where operations at a mine or mining plant are discontinued or suspended, the notice mentioned in subsection (2) shall advise whether.

ATF Explosives Industry Newsletter - December Final Rule – Rules of Practice in Explosives License and Permit Proceedings; R evisions Reflecting Changes Consistent With the Homeland Security Act of - Nov.

25, Final Rule - Removal of Expired Regulations. The 20th century was largely dependent upon fossil fuel, in particular petroleum. The petroleum industry provides fuel and other compounds for modern society, ranging from natural gas, passing through diesel and culminating with polymers.

These polymers are seeing in every aspect of modern life (books, computers, cars, foams, cloves, and so on). [Federal Register: Ap (Vol Number 71)][Proposed Rules] [Page ] From the Federal Register Online via GPO Access [] [DOCID:fr13ap] Part III Department of Labor Occupational Safety and Health Administration 29 CFR Part Explosives; Proposed Rule DEPARTMENT OF LABOR Occupational Safety and Health Administration.

Acta Astronautica. Vol. 6, pp. Pergamon Press Printed in Great Britain Rock breakage by explosives. HAGAN Senior Mining Engineer (Applied Blasting Research), Explosives Division, ICI Australia Limited, Melbourne, Australia {Received 20 December ) Abstract--Explosive charges should provide a peak compressive strain at the blasthole wall Cited by: book sets out some basic principles for use in the absence of specific regulations, or in conjunction with them.

Mines’ inspectorates can play an important role in overseeing OSH in small-scale mines and in providing advice, as well as policing regula-tions. We hope that this handbook will be of use to them in their impor-tant task. Around the Goliath's gas giant was a network of 24 small satellites, each over a million miles from the outer wisps of atmosphere, circling the massive superplanet in such a way that the Goliath was always forced to stay on the move.

They were armed with massive explosive charges that dropped from the satellite and attempted to strike the Goliath. Sound Military Decision [US Naval War College] ; Landing Force Manual, United States Navy () [in progress] Neutrality Instructions--U.S.

Navy War Instructions, United States Navy, [F.T.P. (A)] -- The basic doctrine for naval operations in World War II. Joint Action of the Army and Navy [FTP ] ; Joint U.S.

Air-Amphibious Communication. Gunpowder, also known as black powder to distinguish it from modern smokeless powder, is the earliest known chemical consists of a mixture of sulfur (S), charcoal (C), and potassium nitrate (saltpeter, KNO 3).The sulfur and charcoal act as fuels while the saltpeter is an oxidizer.

Because of its incendiary properties and the amount of heat and gas volume that it .Full text of "Hand book of explosives; instructions in the use of explosives for clearing land, planting and cultivating trees, drainage, ditching, subsoiling and.

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.

• In mining and quarrying operation, the main objective is to extract the largest possible quantity at minimum cost.