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The Colliery Engineer Volume 25 (Paperback) Loot Price: R174
Discovery Miles 1 740
The Colliery Engineer Volume 25 (Paperback): Books Group
The Colliery Engineer Volume 25 (Paperback): Books Group

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The Colliery Engineer Volume 25 (Paperback)

Books Group

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Loot Price R174 Discovery Miles 1 740

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1905 Excerpt: ...to accommodate wear, its substantial adjustable dust-proof pillow blocks, and its top-feed hopper, insuring large capacity and permitting material to be partly crushed while in suspension. The accessibility of its inner parts is also one of its strong features. The taking off of the rear plate and the handhole plates on the side of the machine make it possible to change the beater arms as well as the screening surface when necessary. The screening surface is made up in sections, so that it is the work of but a few moments to take out or change from one size mesh to another. Many of these machines are in use. It is made in many sizes to suit the various requirements, for instance, in coal the capacity varies anywhere from 50 to 100 tons of coal per hour depending entirely upon the degree of fineness. In pulverizing material such as rock its capacity is anywhere from 10 to 25 tons per hour. The Jeffrey Co. make crushing tests free for those interested. A complete catalog on this subject can be had by addressing the manufacturers. Bentonite is the name given to a soft massive, fine-textured clay, used with success as a soap filler and as a dilutent for certain powerful drugs. COSTS OF MINING AND COKING Relative Commercial Returns from Operating in the Connellsville and Walston-Reynoldsville Districts, Penna. By Edward V. D'nvilliers, Philadelphia, Pa In connection with some recent professional work in the coal fields of Western Pennsylvania, with special reference to results of coking operations, 1 was asked to compile a statement giving the estimated cost of mining coal and manufacturing coke at two hypothetical plants of 500 ovens each, giving the relative yield of coal in coke at each plant; and, upon the average number of working days in each of the past f...


Imprint: Rarebooksclub.com
Country of origin: United States
Release date: May 2012
First published: May 2012
Authors: Books Group
Dimensions: 246 x 189 x 40mm (L x W x T)
Format: Paperback - Trade
Pages: 784
ISBN-13: 978-1-156-21068-0
Barcode: 9781156210680
Categories: Books
LSN: 1-156-21068-2

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