[PDF] Application Of Simulation In Evaluating Low Grade Mineral Deposits eBook

Author : Andre G. Journel
Publisher : Oxford University Press
Page : 242 pages
File Size : 37,3 MB
Release : 2004-05-27
Category : Science
ISBN : 9780199771264

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This book addresses the practice of geostatistical simulation to evaluation of mineral reserves, prediction of recovered tonnages and mineral grades and the impact of mining dilution. Such prediction is absolutely critical for mine planning and investment decisions, yet it cannot be made on maps directly interpolated from present data. Various dilution factors need to be introduced to account for · the support effect: mining unit volumes are vastly different from composite data unit volumes · the information effect: future selection of ore/waste will be based on vastly different data than that presently available. Geostatistical simulations allow a rigorous evaluation of these effects on reserves recovery. These stochastic simulations have the potential to be for the mining industry what a wind tunnel is for aircraft design. This book is written by two expert geostatisticians--Journel is the pioneer of mining geostatistics--and established academics.

Author : Richard F. Hewlett
Publisher :
Page : 54 pages
File Size : 43,9 MB
Release : 1965
Category : Boring
ISBN :

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This report describes how a limited number of preliminary exploration drill-hole assays from a mineral deposit can be used to design grid spacing that is both economic and efficient for subsequent evaluation drilling of that deposit. Relationships between desired precision of the estimate of grade of ore and drilling cost are used to determine the economic drill-hole spacing. The statistical concept of precision in estimating grade of ore is used to determine the efficient drill-hole spacing. Assay data from approximately 50 known copper deposits were studied, and the relationships of the statistical parameters of these deposits were computed. Drilling requirements for various precisions of the estimates of grade of ore were computed for some of these known deposits to serve as guides for drilling future copper deposits. The effect of various geologic factors on the trend in grade of ore and, therefore, on the drilling requirements is shown for certain deposits.

Author : Thomas F. Torries
Publisher : SME
Page : 176 pages
File Size : 23,64 MB
Release : 1998
Category : Business & Economics
ISBN : 9780873351591

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Designed to complement traditional engineering texts, this book emphasizes the concepts of mineral project evaluation rather than computational details. It describes various economic evaluation techniques typically employed (including conventional cost analysis, discounted cash flow, and option analysis), their uses, and their relationships with geological, technological, and financial evaluations.