Author : Daniel Harrington
Publisher :
ISBN 13 : 9781331938934
Total Pages : 148 pages
Book Rating : 4.9/5 (389 download)
Book Synopsis Underground Ventilation at Butte (Classic Reprint) by : Daniel Harrington
Download or read book Underground Ventilation at Butte (Classic Reprint) written by Daniel Harrington and published by . This book was released on 2015-07-21 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Underground Ventilation at Butte This bulletin on underground ventilation in the copper and zinc mines at Butte, Mont., was written in 1919 from data collected by Mr. Harrington during 1916, 1917, and 1918, when he and Dr. Lanza of the United States Public Health Service were engaged on a study of miners' consumption in mines of the Butte district. Largely on account of conditions arising from the World War, publication was deferred until this date, and its issuance now is because of the fact that it contains much up-to-date general information on ventilation in metal mines, though many of the specific underground conditions described have since been materially changed. The mines in the Butte district, with their hot rock, numerous veins, deep workings, and intensely concentrated activities, present to their operators many intricate problems requiring the utmost engineering skill. By no means the least of these problems is that of ventilation and this manuscript describes some of the numerous difficulties encountered in providing mine working places with safe, comfortable, and healthful air conditions. Although the difficulties encountered are great, the mining companies have grappled with them and have made and are making wonderful progress in ventilation betterments, and the specific underground conditions described as existing in 1916, 1917, and 1918 have, in very large measure, been changed for the better in these ways: 1. The dust situation has been largely eliminated by the adoption of wet drills for practically all drilling, by the introduction of water lines for sprinkling to practically all working faces in many mines, and by increasing the flow of air to working places to remove dust as it is formed. Butte mining companies are in the front rank of those metal-mining companies of the United States that are trying to reduce the dust hazard. 2. Practically every mine in Butte has at least one man who devotes a large part of his time to ventilation, overseeing methods and devices designed to force moving currents of fresh air to the workers. 3. During the past few years the volumes of air delivered to individual Butte mines have been vastly increased, the increase varying from 50 per cent to several hundred per cent. 4. Nearly all Butte mines have sunk special shafts for ventilation, or have installed fans, or have otherwise made heavy financial expenditures for equipment or facilities to better ventilation. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
