Small-scale Placer-mining Methods PDF Download
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Author: Charles Freeman Jackson
Publisher:
ISBN:
Category : Gold mines and mining
Languages : en
Pages : 58
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Book Description
Author: Charles Freeman Jackson
Publisher:
ISBN:
Category : Gold mines and mining
Languages : en
Pages : 58
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Book Description
Author: California Department of Conservation
Publisher:
ISBN: 9781365035654
Category : Reference
Languages : en
Pages : 0
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Book Description
This report provides practical, timely information on methods and equipment used in placer gold recovery. Included is detailed information on equipment, practices, recovery factors, efficiency, design, and, where available, costs. Selected gold recovery operations are described in detail. In addition, the reported efficiency and reliability of various types of equipment used today is presented. One notable method not described is the cyanide process, the recovery of gold through leaching with cyanide, a hazardous substance that must be handled with great care. The information presented herein applies to small as well as large placer mining operations. Recreational and independent miners will find information on available equipment and designs with some suggestions for improving recovery. Those intending to mine small to medium-sized placer deposits will find detailed descriptions of suitable equipment and recovery methods. Finally, those interested in byproduct gold recovery from sand and gravel operations...
Author: Charles W. Finkl
Publisher: Springer Science & Business Media
ISBN: 0442224990
Category : Science
Languages : en
Pages : 868
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Book Description
Field work, supplemented by laboratory studies, is a cornerstone for the geological sciences. This volume provides an introduction to general field work through selected topics that illustrate specific techniques and methodologies. One hundred and twenty-three main entries prepared by leading authorities from around the world deal with aspects of exploration surveys, geotechnical engineering, environmental management. field techniques, mapping, prospecting, and mining. Special efforts were made to include topics that consider aspects of environmental geology in particular those subjects that involve field inspections related to, for example, the placement of artificial fills, sediment control in canals and waterways, the geologic effects of cities, or the importance of expansive soils to environmental management and engineering. In addition, some widely ranging topics dealing with legal affairs, geological methodology, the scope and organization of geology, report writing, and other concepts, such as those related to plate tectonics and continental drift, provide a necessary perspective to the arena of field geology.
Author: Michael Silva
Publisher: Sylvanite Publishing
ISBN: 9781614740377
Category :
Languages : en
Pages : 40
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Book Description
Placer Gold Recovery Methods - Michael Silva - This is a great little book put out by the California Division of Mines in the 1980's and now back in print by Sylvanite Publishing. It covers in detail all the methods used to recover placer gold such as Panning, Sluicing, Jigs, Centrifugal bowls such as the Knelson Concentrator, Belt Separators, Reichert Cones, Helixes, Shaking Tables and more. These are still the standard machines used today in most placer operations.
Author: Dave McCracken
Publisher: New Era Publications International Aps
ISBN: 9780963601506
Category : Gold mines and mining
Languages : en
Pages : 278
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Book Description
GOLD MINING IN THE 1990's--This one book outlines EVERYTHING a beginner will need & want to know about getting started at gold mining today, either as a hobby or as a small-scale commercial activity. In easy to understand language, supported by clear photographs & graphic demonstrations, this book covers all of the important subjects--including what gold is & looks like, where it comes from & where to find it, how gold deposits & how to find & recover it, & also touches on the legal aspects of how to claim the gold for yourself. The book covers the up-to-date mining procedures of panning gold, sluicing, dredging, high-banking, drywashing, electronic probing, hardrock mining, basic refining techniques, cleaning procedures, selling gold, & much, much more. Herein lies the most comprehensive & thorough work on electronic prospecting techniques (locating gold with metal detectors) available in any publication on the market today. Virtually an encyclopedia of modern gold mining techniques, there is no other book available more up to date, more simple to understand, or which covers the entire subject as thoroughly as this manual.
Author: Institution of Mining and Metallurgy (Great Britain)
Publisher: Elsevier Applied Science
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 624
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Book Description
Author: Maureen G. Johnson
Publisher: Forgotten Books
ISBN: 9780331313765
Category :
Languages : en
Pages : 146
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Book Description
Excerpt from Placer Gold Deposits of Nevada Following the discovery of placers at Gold Canyon, placer discoveries in Nevada were broadly in three periods: the 1860's to 1880's, when many small deposits throughout the State were discovered and sporadically worked and several large placers were discovered and extensively worked; the short period between 1906 and 1910, when very rich placers were dis covered at Lynn, Battle Mountain, Manhattan, and Round Mountain; the early 1930's, when economic conditions created by the depression caused a renewed interest in placer mining, and many individuals sought, and a few discovered, new placer areas throughout the State. The location of the placers described in this report is shown on plate 1. Very little factual information can be found about the early periods of placer mining in Nevada. For many placers, the only reports available are hearsay estimates of production and speculations about the extent of the placer ground based on remnants of placer pits, shafts, and other workings. Many of the placers said to have had a high production between 1860 and 1890 were worked by Chinese miners who came to Nevada dur ing the building of the railroads and stayed on to work at mining and other activities. The Chinese were reputed to be secretive with their earnings from the placers and did not ship the gold to the mint by Wells Fargo or other shippers. They worked the gravels very thoroughly in areas where American miners did not wish to expend great labor to win the gold. The placers in the Sierra and Spring Valley districts, Pershing County, were worked by Chinese miners; they have a very high estimated production before 1900 and a comparatively low known production since that time. 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: Charles Volney Averill
Publisher: Franklin Classics
ISBN: 9780343276164
Category :
Languages : en
Pages : 370
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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 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. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: United States. Bureau of Mines
Publisher:
ISBN:
Category : Mining engineering
Languages : en
Pages : 292
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Book Description
Author: Maureen G. Johnson
Publisher:
ISBN: 9781614740179
Category : Technology & Engineering
Languages : en
Pages : 54
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Book Description
A Reprint of the Original US Geological Survey Bulletin 1348. This publication is a catalog of locations, geology, and production from the placer districts of New Mexico. Over 40 New Mexico Placer locations covered in this publication.
