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Author : Joseph Colin Frances Johnson
Publisher : Unknown
Page : 128 pages
File Size : 52,8 Mb
Release : 2003
Category : Electronic
ISBN : OCLC:703936161
Author : Joseph Colin Francis Johnson
Publisher : Unknown
Page : 286 pages
File Size : 55,9 Mb
Release : 1897
Category : Gold mines and mining
ISBN : PSU:000001568097
Author : J. C. F. Johnson
Publisher : Good Press
Page : 144 pages
File Size : 50,8 Mb
Release : 2021-04-25
Category : Fiction
ISBN : EAN:4057664579058
Getting Gold by J.C.F. Johnson is a treatise for all those interested in modern ore mining. This book provides the principles and fundamental knowledge for all things gold mining. You will be fascinated by this novel's indispensable hard lessons from experts for beginner miners.
Author : Anonim
Publisher : Unknown
Page : 0 pages
File Size : 44,8 Mb
Release : 1904
Category : Electronic
ISBN : OCLC:1101370664
Author : Joseph Colin Francis Johnson
Publisher : Unknown
Page : 0 pages
File Size : 49,8 Mb
Release : 1898
Category : Gold mines and mining
ISBN : LCCN:01001315
Author : J. C. F. Johnson
Publisher : CreateSpace
Page : 120 pages
File Size : 43,9 Mb
Release : 2014-06-24
Category : Business & Economics
ISBN : 1500300756
This collection of literature attempts to compile many of the classic, timeless works that have stood the test of time and offer them at a reduced, affordable price, in an attractive volume so that everyone can enjoy them.
Author : Joseph Colin Francis Johnson
Publisher : Createspace Independent Pub
Page : 182 pages
File Size : 51,5 Mb
Release : 2012-11-25
Category : Crafts & Hobbies
ISBN : 1481090984
This is a book for people with an innate curiosity and desire to learn about one of the oldest fascinations in human history. Gold mining is the removal of gold from the ground. There are several techniques and processes by which gold may be extracted from the earth. It is impossible to know the exact date that humans first began to mine gold, but some of the oldest known gold artifacts were found in the Varna Necropolis in Bulgaria. The graves of the necropolis were built between 4700 and 4200 BC, indicating that gold mining could be at least 7000 years old. Gold objects are plentiful in the Bronze age, especially in Ireland and Spain, and there are several well-known possible sources. Romans used hydraulic mining methods, such as hushing and ground sluicing on a large scale to extract gold from extensive alluvial deposits, such as those at Las Medulas. Mining was under the control of the state but the mines may have been leased to civilian contractors some time later. The gold served as the primary medium of exchange within the empire, and was an important motive in the Roman invasion of Britain by Claudius in the first century A.D., although there is only one known Roman gold mine at Dolaucothi in west Wales. Gold was a prime motivation for the campaign in Dacia when the Romans invaded Transylvania in what is now modern Romania in the second century A.D. The legions were led by the emperor Trajan, and their exploits are shown on Trajan's Column in Rome and the several reproductions of the column elsewhere (such as the Victoria and Albert Museum in London). Under the Eastern Roman Empire Emperor Justinian's rule, gold was mined in Balkans, Anatolia, Armenia, Egypt, and Nubia. Gold was first mined in the area of the Kolar Gold Fields (KGF) in Bangarpet Taluk of Kolar District of Karnataka state, India, prior to the 2nd and 3rd century A.D. by the digging of small pits. (Golden objects found in Harappa and Mohenjo-daro have been traced to KGF through impurities analysis-the impurities include 11% silver concentration, found only in KGF ore.) During the Chola period in the 9th and 10th century A.D., the scale of the operation grew. The tradition of mining gold started at least as early as the first millennium B.C. The Champion reef at the Kolar gold fields was mined to a depth of 50 metres (160 ft) during the Gupta period in the fifth century A.D. The metal continued to be mined by the eleventh century kings of South India, the Vijayanagara Empire from 1336 to 1560, and later by Tipu Sultan, the king of Mysore state and the British. It is estimated that the total gold production in Karnataka to date is 1000 tons. Mining of the Hungarian deposit primarily aroung Kremnitz were the last largest of the Medieval period in Europe. The discovery of gold in the Witwatersrand led to the Second Boer War and ultimately the founding of South Africa. The Carlin Trend of Nevada, U.S., was discovered in 1961. Official estimates indicate that total world gold production since the beginning of civilization has been 4.97 billion troy ounces and total Nevada production is three percent of that, which ranks Nevada as one of the Earth's primary gold producing regions. This is a great book to learn the processes of gold mining and will give you the tools to build your own small gold mine if you so please. Ever asked the question, ''how is gold mined?'', ''where to get goldwell'', well look no further. prospecting for gold? This is your goldmine!
Author : J. C. F. Johnson
Publisher : Unknown
Page : 104 pages
File Size : 41,9 Mb
Release : 2006-07-01
Category : Technology & Engineering
ISBN : 9781406801385
Author : Joseph Colin Frances Johnson
Publisher : Unknown
Page : 206 pages
File Size : 42,7 Mb
Release : 1905
Category : Gold mines and mining
ISBN : OCLC:17019867
Author : J. C. F. Johnson
Publisher : DigiCat
Page : 146 pages
File Size : 53,6 Mb
Release : 2022-08-10
Category : Fiction
ISBN : EAN:8596547158929
Getting Gold by J.C.F. Johnson is a treatise for all those interested in modern ore mining. This book provides the principles and fundamental knowledge for all things gold mining. You will be fascinated by this novel's indispensable hard lessons from experts for beginner miners.
Author : Joseph Colin Francis Johnson
Publisher : Unknown
Page : 278 pages
File Size : 48,9 Mb
Release : 2015-02-14
Category : Electronic
ISBN : 1298016061
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 : Joseph Colin Francis Johnson
Publisher : Unknown
Page : 284 pages
File Size : 40,6 Mb
Release : 1904
Category : Gold mines and mining
ISBN : HARVARD:HS1V1U
Author : Manuel Eissler
Publisher : Unknown
Page : 276 pages
File Size : 49,9 Mb
Release : 1888
Category : Gold
ISBN : COLUMBIA:CU55774962
Author : Manuel Eissler
Publisher : Unknown
Page : 776 pages
File Size : 41,8 Mb
Release : 2015-08-05
Category : Technology & Engineering
ISBN : 1332223834
Excerpt from The Metallurgy of Gold: A Practical Treatise on the Metallurgical Treatment of Gold-Bearing Ores, Including the Processes of Concentration, Chlorination, and Extraction by Cyanide, and the Assaying, Melting, and Refining of Gold In this volume my aim has been to present in a condensed form such an account of the several processes which are generally used for the Extraction of Gold from the Ore as shall be sufficient for the full information of investors, and others interested in gold mining operations, who may wish to gain an intelligent insight into the modus operandi at the gold mines. At the same time I have given full descriptions, with illustrations, of the machinery employed in those processes, in sufficient detail to make the book of substantial value to professional men and manufacturers concerned in the gold-mining industry. The treatment of gold-bearing ores, although at one time so uncertain in its results as to be, not only a hazardous, but almost a purely speculative business, has now, through continued improvements in appliances and the adoption of more economical methods, developed into a settled industry, in which more or less profitable results may be obtained even from comparatively low grade ores. 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 : Manuel Eissler
Publisher : Unknown
Page : 784 pages
File Size : 49,5 Mb
Release : 1896
Category : Gold
ISBN : STANFORD:36105032240892