Practical Stamp Milling And Amalgamation by H. W. MacfarrenPractical Stamp Milling And Amalgamation by H. W. Macfarren

Practical Stamp Milling And Amalgamation

byH. W. Macfarren

Paperback | January 10, 2012

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This historic book may have numerous typos, missing text or index. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. 1910. Not illustrated. Excerpt: ... such good condition and to plan the routine of daily work so well that the mill work is no longer odious but is accompanied with a considerable degree of gratification. Besides an able millman, a well constructed and properly designed mill is necessary. With these factors the stampmill becomes the most satisfactory metallurgical machine in use, to those both directly and indirectly interested. There are 40-stamp mills operating without a maehineshop or even a lathe, all repairs necessary being made by the millman sometimes assisted by the blacksmith. There are 10-stamp mills that, figuratively speaking, are in the machine-shop all the time, due to the absence of one of these factors, usually to defects in the installation. No whistling or shouting should be allowed in a mill, except as a danger signal. To call attention a hissing noise should be made; as such a noise is keyed in a different pitch from that of the stamps, it can be heard across a large mill. Similarly, in talking, no attempt should be made to talk above the roar, but in a moderate tone keyed in a different pitch, which can only be learned by experimenting. Sign language should be developed as far as possible. Where it is desired to call a man at a distance, as at the rock-breaker or the cyanide plant, a triangle, such as is in common use at mine boarding-houses, should be used. In some mills the foreman carries a police whistle for the purpose of calling men. Colored signal lights are used for telephones. There is a serious part of stamp-milling--the loss of hearing. A 10 or 20-stamp mill is not hard on the hearing, but the larger mills cause the majority of men to become deaf in time. To save the ear drums as much as possible and reduce the distress of the continuous noise, ELEVATING PULP 159 wa...
Title:Practical Stamp Milling And AmalgamationFormat:PaperbackDimensions:46 pages, 9.69 × 7.44 × 0.1 inPublished:January 10, 2012Publisher:General Books LLCLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:0217740154

ISBN - 13:9780217740159