The Proceedings Of The Chemical Metallurgical And Mining Society Of South Africa PDF Download

Excerpt from The Journal of the Chemical, Metallurgical and Mining Society of South Africa, Vol. 19: July, 1918 June, 1919 In the case of the miner breathing quart zite dust the dust remains for the most part in. Situ in the lungs, and there tends to accumulate from month to month and year to year. Some of it is certainly got 'rid of; but to reach a balance between in take and output, without there being a dangerous permanent loading of the lungs with dust, the amount of dust inhaled must. Be reduced to a minimum. The fate of men who have constantly, and often against constant warning and against the law, exposed themselves. To heavy concentrations of quartzite or granite. Dust in working rock drills and in blasting, is tragic. For mauv years back I have. Abstracted for the Home Office the information obtained by local Registrars in Cornwall as to the mining history of miners who have died there. Since the war no statistics have been pub lished, but for ten years previous to the war' the average duration of employment on machine drills of the men who died in the Redruth area, and had worked machine drills in the Transvaal onlv, was years, and in Cornwall vonlv was ye, ars.* Practicallv every one of these men died of phthisis, and usually at an age below 40. 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.