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Bancroft Library: The Library of the University of California
Excerpt from Bancroft Library: The Library of the University of California
The republication of the papers and consequent discus sion upon the sampling of ore in mines and the estima tion of the tonnage available needs no apology; it is a subject of the utmost practical importance. It is safe to say that the reputation of mining engineers has suffered more from the neglect of this branch of practice than from any other cause. On the other hand, those engi meers who have won a deserved reputation for excellence of judgment are the men who, as a rule, have learned early in their career how to take samples which are a trustworthy index to the value of large bodies of ore. Ih ferences from the results thus obtained are, of course, as important as the sampling itself, but he who is careless in the performance of one duty is hardly likely to be cir cumspect in the other. There are not many data bearing upon the present and future productiveness of a mine which an engineer can secure at first-hand; all the more reason for the exercise of vigilance in collecting those which are 'available. Such statements indeed are truisms to the experienced, but they are overlooked with a fatal frequency.
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.
The republication of the papers and consequent discus sion upon the sampling of ore in mines and the estima tion of the tonnage available needs no apology; it is a subject of the utmost practical importance. It is safe to say that the reputation of mining engineers has suffered more from the neglect of this branch of practice than from any other cause. On the other hand, those engi meers who have won a deserved reputation for excellence of judgment are the men who, as a rule, have learned early in their career how to take samples which are a trustworthy index to the value of large bodies of ore. Ih ferences from the results thus obtained are, of course, as important as the sampling itself, but he who is careless in the performance of one duty is hardly likely to be cir cumspect in the other. There are not many data bearing upon the present and future productiveness of a mine which an engineer can secure at first-hand; all the more reason for the exercise of vigilance in collecting those which are 'available. Such statements indeed are truisms to the experienced, but they are overlooked with a fatal frequency.
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.
228 pages, Paperback
First published August 5, 2015
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