Download or read book The Sampling and Evaluation of Gold Deposits written by Allen Graham Royle and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Gold Exploration and Evaluation written by Eoin Macdonald and published by Elsevier. This book was released on 2007-02-21 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: Designed for geologists and engineers engaged specifically in the search for gold deposits of all types and as a reference for academics in higher schools of learning, Handbook of gold exploration and evaluation provides principles and detailed explanations that underpin the correct interpretation of day-to-day experience in the field. Problems are addressed with regard to the analysis, interpretation and understanding of the general framework within which both primary and secondary gold resources are explored, developed and exploited. Handbook of gold exploration and evaluation covers a comprehensive range of topics including the nature and history of gold, geology of gold ore deposits, gold deposition in the weathering environment, sedimentation and detrital gold, gold exploration, lateritic and placer gold sampling, mine planning and practise for shallow deposits, metallurgical processes and design, and evaluation, risk and feasibility. Covers the nature and history of gold Addresses problems with regard to the framework in which gold resources are explored, developed and exploited Discusses topics including the geology of gold ore deposits, metallurgical processes and design, evaluation, risk and feasibility
Download or read book Handbook of Gold Exploration and Evaluation written by Eoin H. Macdonald and published by . This book was released on 2007 with total page 647 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Guide to the Evaluation of Gold Deposits written by M. Vallée and published by Canadian Institute of Mining, Metallurgy and Petroleum. This book was released on 1992 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reviews the various steps and components of the evaluation of gold deposits and the classification of reserves; the objective is to improve the accuracy of the estimates and reduce the risks of financial losses that are tied to investment decisions in the mining sector.
Download or read book Artisanal Small Scale Gold Mining written by Katherine von Stackelberg and published by World Bank Publications. This book was released on 2022-06-13 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: This framework document provides a pragmatic approach for designing representative studies and developing uniform sampling guidelines to support estimates of morbidity that are explicitly linked to exposure to land-based contaminants from small-scale artisanal gold mining activities. A primary goal is to support environmental burden of disease evaluations, which attempt to attribute health outcomes to specific sources of pollution. The guidelines provide recommendations on the most appropriate and cost-effective sampling and analysis methods to ensure the collection of representative population-level data, sample size recommendations for each contaminant and environmental media, biological sampling data, household survey data, and health outcome data. This framework focuses on small-scale artisanal gold mining (ASGM) activities that are known to use and generate mercury (Hg) as well as other metals, such as arsenic (As) and lead (Pb), depending on the specific ores being mined. A particular concern with Hg is the conversion to methylmercury (MeHg) in aquatic environments, leading to bioaccumulation and biomagnification in fish that may be locally consumed. Exposure to Hg, MeHg, and Pb are strongly associated with neurodevelopmental health outcomes in children. Exposure to Hg and MeHg are also associated with neurological illnesses in adults. Exposures to Pb are associated with renal outcomes in children and adults, and cardiovascular outcomes in adults. Exposure to As are associated with neurodevelopmental health outcomes in children, arsenicosis and skin disorders in children and adults, and potential cancers in adults, including skin, bladder, and lung. The primary objective of this framework is to guide research to assess the relationship between environmental contamination, exposures, and health outcomes related to a subset of contaminants originating from ASGM activities for particularly vulnerable populations (such as children) and the general population within a single household in the vicinity of ASGM sites in low- and medium-income countries. To achieve this objective, biomonitoring and health outcome data are linked to household survey and environmental data (for example, soil, dust, water, agricultural products, fish) at the individual level from an exposed population compared to individuals from an unexposed (reference) population. Data on exposures and health outcomes in the same individual across a representative set of individuals is required to support an understanding of the potential impact of ASGM activities on local populations. These guidelines can also assist in building local capacity to conduct environmental assessments following a consistent methodology to facilitate comparability across ASGM sites in different geographic areas. Sampling strategies and methods are prioritized given information needs, resource availability, and other constraints or considerations. The framework includes a number of supporting appendixes that provide additional resources and references on relevant topics.
Download or read book Sampling and the Estimation of Gold in a Placer Deposit written by George Richard Fansett and published by . This book was released on 1917 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Essentials for a Preliminary Report on a Small Lode gold Mine Or Prospect with Notes on Sampling written by Charles Will Wright and published by . This book was released on 1933 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper has been written to aid the owner of a small gold mine or prospect in preparing a report on his property for the purpose of interesting capital. If an owner can afford to do so, he should employ a mining engineer of recognized standing and experience to examine and report on his property, but many owners of small mines and particularly of prospects cannot make the expenditure required for this. Further, many of them do not know how to prepare a description which will cover those features of a deposit on which a potential investor promises his opinion as to its worth. If such an owner is convinced that he possesses and orebody of sufficient grade and size to warrant the required expenditure for a thorough investigation and wishes to present his property to prospective investors, then the following suggestions concerning the proper way to sample his deposit, estimate the tonnage of developed and probable ore, and prepare a report may be of assistance.
Download or read book Sampling and Evaluation of an Alluvial Gold Project written by Tracey Whitbourn and published by . This book was released on 1993 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The aim of the project was to determine the ore reserve of an alluvial gold mine situated at Amphitheatre, 80 km from Ballarat. The ore reserve was calculated using a geostatistics program called Geopack as well as a classical method known as Random Stratified Grid estimation. Throughout the life of the project, a drilling pattern was designed and drilled, with sampling of 50 samples following the drilling stage. This sampling, along with previous assay data, formed the orebody data used for the estimation calculations. Harvard Graphics was used to illustrate the cross sections of each drill hole for future reference. The ore reserve was calculated to be 1,136,249 bcm with a grade of 489 mg/bcm. This should extend the life of the mine by at least six months, which was the intended purpose of the calculation" -- Abstract/Synopsis.
Download or read book Evaluation of Selected Lode Gold Deposits in the Chugach National Forest Alaska written by Robert B. Hoekzema and published by . This book was released on 1987 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mine Sampling and Valuing written by Charles Simon Herzig and published by . This book was released on 1914 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sampling for Gold written by Arizona Bureau Mines and published by Createspace Independent Publishing Platform. This book was released on 2016-05-27 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: Leading mining historian Kerby Jackson brings together five historic publications from the Arizona Bureau of Mines on the subject of sampling and testing for gold, be it placer or lode gold. Included in this publication are "Mill and Smelter Methods of Sampling" (1915), "Sampling and the Estimation of Gold in a Placer Deposit" (1917), "Sampling of Ore Dumps and Tailings" (1917), "Sampling Mineralized Veins" (1918) and "Select Blowpipe and Acid Tests for Minerals" (1918). As sampling is the most important activity that a miner or prospector seeking gold needs to engage in, these tried and proven methods of sampling will be found to greatly assist those seeking their own golden fortune. Note: This edition is a perfect facsimile of the original edition and is not set in a modern typeface. As such, some type characters and images might suffer from slight imperfections or minor shadows in the page background.
Download or read book The Problem of Sampling Mineral Deposits written by Filippo Falini and published by . This book was released on 1957 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sampling and Sample Preparation written by A. G. Royle and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sampling Gold Ore by Diamond drilling in the Homestake Mine Lead S Dak written by George S. Koch and published by . This book was released on 1971 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Statistical Interpretation of Sample Assay Data from the Getchell Mine Humboldt County Nev written by George S. Koch and published by . This book was released on 1970 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analytical Methods for Determining Gold in Geological Samples written by Esko Kontas and published by . This book was released on 1993 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geology and Geochemistry of Gold Deposits of the Big Canyon Area El Dorado County California written by John Thomas Nash and published by . This book was released on 1989 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:
