Author: Garnet Basque
Publisher: Surrey, B.C. : Heritage House
ISBN:
Category : Nature
Languages : en
Pages : 96
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Book Description
Many creeks and rivers in the west are still good gold producers. This book describes methods of extracting placer gold, including rocker, tom, sluice, electrostatic, and hydraulic concentrators.
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:
ISBN: 9780984369898
Category : Technology & Engineering
Languages : en
Pages : 128
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Book Description
A Reprint of the Original US Geological Survey Bulletin 1356. This publication is a catalog of locations, geology, and production from the placer districts of Nevada. Over 100 Nevada Placer locations covered in this publication. This book is the definative source for placer deposits in Nevada.
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: Scott A. Stebbins
Publisher:
ISBN:
Category : Hydraulic mining
Languages : en
Pages : 102
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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: 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.
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: 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: John Sinclair
Publisher: Springer Science & Business Media
ISBN: 9401176116
Category : Science
Languages : en
Pages : 380
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Book Description
Quarrying and all other branches of surface mining rather than diminishing in importance have become of more and more consequence economically, industrially and particularly with the depletion of high-grade deep-mined mineral reserves. Low-grade minerals require low cost extraction and this in many cases necessitates very expensive mechanized equipment with the cost of individual units running into millions of pounds in the case of large scale operations with high productivity. There has been, and there still is, a tendency for the smaller single quarries to be amalgamated into groups with large financial resources and therefore with the ability to purchase these expensive machines so necessary to make operations viable. This in turn requires wider administrative and technical knowledge in executives of these groups and as these often handle a wide range of products from widely differing systems of working, this technical knowledge should embrace the exploitation of many different types of deposits. There is, at present, a great dearth throughout the world of such qualified executives as is apparent from advertisements of vacancies in the technical press. It would appear that these industries offer an attractive career to the widely qualified and experienced technologist in these fields. This book deals with methods of working in the surface extractive indus tries, quarry management and power supply-but does not deal with related ancillary processes except where these affect quarrying operations.
