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Author: John Glenville Murphy
Publisher:
ISBN:
Category : Mining engineering
Languages : en
Pages : 120
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Book Description
Author: John Glenville Murphy
Publisher:
ISBN:
Category : Mining engineering
Languages : en
Pages : 120
Get Book Here
Book Description
Author: John G. Murphy
Publisher: Forgotten Books
ISBN: 9780428889937
Category : Technology & Engineering
Languages : en
Pages : 112
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Book Description
Excerpt from Practical Mining: A Field Manual for Mining Engineers; With Hints to Investors in Mining Properties The percentage which is realized from an investment is governed to some extent by the nature of the security. If it is such as is not liable to much fluctuation, it is sought for permanent investment, even at a low rate of interest. Generally we may say: The profit to be expected from any investment should be commensurate with the risk taken. People who are glad to realize 5 per cent on real estate will expect to realize 25 to 30 per cent, and often more than this amount, on a mining venture, as it is called; and it must be admitted that it is not too much for a purchaser of min ing-stock to expect under existing condi tions: but the intelligent operator, not in mining stock but in mines, will be satisfied with less. Naturally, a mining investment should be expected to pay a much higher rate of interest than real estate or railway securities, because it is less permanent. The chief cause of the uncertainty in min ing ventures, however, is the fact that the most of those offered to the public are not expected to be productive for any length of time, if at all. To get an accu rate idea of the mining industry would require severe study and time, so that the majority of operators prefer to pay for obtaining the necessary knowledge, and success or failure is chiefly due to the value of this purchase. The following pages are written at the request of friends, with the purpose of pointing out as briefly as possible the nature of the knowledge to be sought, and by exposing some of the sources, to limit the frequency of error. 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.
Author: John Glenville Murphy
Publisher: Sagwan Press
ISBN: 9781377213798
Category : History
Languages : en
Pages : 118
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Book Description
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: John G Murphy
Publisher: Legare Street Press
ISBN: 9781020829178
Category :
Languages : en
Pages : 0
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Book Description
This book is a practical guide to the science and methods of mining for students and practitioners in the field. It covers a wide range of topics including geology, mineralogy, and mining engineering, and includes descriptions and illustrations of various types of mining machinery and tools. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: Theodore Francis Van Wagenen
Publisher:
ISBN:
Category : Hydraulic mining
Languages : en
Pages : 118
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Book Description
Author:
Publisher:
ISBN:
Category : Mineral industries
Languages : en
Pages : 414
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Book Description
Author: William Paul Gerhard
Publisher:
ISBN:
Category : Drainage, House
Languages : en
Pages : 316
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Author: Willibald Trinks
Publisher:
ISBN:
Category : Governors (Machinery)
Languages : en
Pages : 170
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Book Description
Author: William Cain
Publisher:
ISBN:
Category : Arches
Languages : en
Pages : 230
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Book Description
Author: Sanford Alexander Moss
Publisher:
ISBN:
Category : Machine design
Languages : en
Pages : 178
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Book Description
