Modern Mine Valuation Classic Reprint

Excerpt from Modern Mine Valuation If one but compare the time and detail, the collection of and compilation from signed vouchers which lie behind the balance sheets of large commercial enter prises, with those forming the basis of mine valuations of similar magnitude, the impartial critic can hardly fail to be struck by the difference so often displayed, and the apparent regard for what, in the first instance, are habitually regarded as guiding principles. In other words, it is held that, while the true inwardness of a report, where the mine has reached the Company stage, can and should be set out on a single sheet of paper in fact, nearly as concisely as a balance sheet - yet the data forming the basis should be collected and vouched for at each successive step in a manner identical in principle with that obtaining in ordinary commercial valuations. 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.

Excerpt from A Study of Methods of Mine Valuation and Assessment: With Special Reference to the Zinc Mines of Southwestern Wisconsin The 1914 assessment of the mines was based on a series of valuations worked out approximately on the Finlay ad valorem method. The ex ploratory, geologic and mining conditions are such that any system of valuation which has its basis in future probable profits must necessarily cause inequitable assessments. 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.

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Excerpt from Principles of Mining: Valuation, Organization and Administration; Copper, Gold, Lead, Silver, Tin and Zinc This volume is a condensation of a series of lectures delivered in part at Stamford and in part at Columbia Universities. It is intended neither for those wholly ignorant of mining, nor for those long experienced in the profession. The bulk of the material presented is the common heritage of the profession, and if any one may think there is insufficient reference to previous writers, let him endeavor to find to whom the origin of our methods should be credited. The science has grown by small contributions of experience since, or before, those unnamed Egyptian engineers, whose works prove their knowl edge of many fundamentals of mine engineering six thousand eight hundred years ago. If I have contributed one sentence to the accumulated knowledge of a thousand generations of engineers, or have thrown one new ray of light on the work, I shall have done my share. I therefore must acknowledge my obligations to all those who have gone before, to all that has been written that I have read, to those engineers with whom I have been associated for many years, and in particular to many friends for kindly reply to inquiry upon points herein discussed. 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.

Excerpt from Mine Sampling and Valuing: A Discussion of the Methods Used in Sampling and Valuing Ore Deposits, With Especial Reference to the Work of Valuation by the Independent Engineer In the past a great deal has been written on the subject of mine sampling and valuation, but for the most part the literature is fragmentary, and I believe that scarcely anywhere is there any reference made to its elementary side. Somehow or other, engineers pick up a knowledge of this part of the business, although I do not think that the methods of mine sampling are taught in schools of mines, nor do the text-books on mining deal with it in detail. A few years ago T. A. Rickard, who at that time was editor of the Engineering and Mining Journal of New York, wrote a series of articles that were followed by contributions from various engineers. These articles and the ensuing discussion were eventually published in book form with the title of 'The Sampling and Estimation of Ore in a Mine.' Aside from this, no attempt at a comprehensive work on the subject exists, and for that reason Mr. Rickard's book has since then served as a sort of text-book to the younger engineers desiring information on this phase of mining engineering. The discussion contained therein was a most valuable one at the time, but on the whole it lacks that continuity of thought which the subject deserves. We owe, too, a great deal to H. C. Hoover, who, in his book 'Principles of Mining, ' has contributed a valuable discussion on mine valuation. It is a source of wonder to me that this matter has not been seriously taken in hand heretofore, because it must be remembered that the whole success of mining operations is often absolutely dependent on accurate mine sampling. I therefore trust that the following pages may serve as a guide to the young engineer and may not be without value to the more experienced and older men. I am indebted to Messrs. Frank H. Probert and Lloyd T. Buell for information regarding churn drilling, as also to E. N.Skinner; to H.S. Munroe for his views on the gravimetric method of calculating averages and to others who have been good enough to offer suggestions of various kinds. 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.

Excerpt from Mines Statement It is my agreeable duty to announce that the year 1906 has been a most pro sperona one for the mining industry; the returns show the value of the mineral production for the past ear to be the highest yet attained, and to constitute a record in the history of this co ony. The gross value of all minerals produced during 1906 amounted to being in excess of 1905. 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.