Design Of Drill Hole Grid Spacings For Evaluating Low Grade Copper Deposits
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Design Of Drill Hole Grid Spacings For Evaluating Low Grade Copper Deposits
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Author : Richard F. Hewlett
language : en
Publisher:
Release Date : 1965
Design Of Drill Hole Grid Spacings For Evaluating Low Grade Copper Deposits written by Richard F. Hewlett and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Boring categories.
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.
Report Of Investigations
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Author :
language : en
Publisher:
Release Date : 1974
Report Of Investigations written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with Mineral industries categories.
Designing Optimal Strategies For Mineral Exploration
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Author : J.G. De Geoffroy
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Designing Optimal Strategies For Mineral Exploration written by J.G. De Geoffroy and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
Few knowledgeable people would deny that the field of mineral exploration is facing some difficult times in the foreseeable future. Among the woes, we can cite a worldwide economic uneasiness reflected by sluggish and at times widely fluctuating metal prices, global financial uncertainties, and relentless pressures on costs despite a substantial slowing down of the rate of inflation. Furthermore, management is forced to tum to more sophisticated and expensive technologies and to look farther afield to more remote regions, as the better quality and more easily accessible ore deposits have now been revealed. This rather gloomy outlook should persuade explorationists to cast about for a new philosophy with which to guide mineral exploration through the challenging decades ahead. Once already, in the early 1960s, a call for change had been heard (Ref. 30 in Chapter 1), when it became obvious that the prospecting methods of yesteryear, so successful in the past, could not keep up with the rapidly growing demand for minerals of the postwar period. The answer, a massive introduction of sophisticated geophysical and geochemical technologies backed by new geo logical models, proved spectacularly successful throughout the 1960s and the 1970s. But for both economic and technological reasons, the brisk pace of the last two decades has considerably slowed down in the early 1980s, as if a new threshold has been reached.
Forecasting The Properties Of Coal Seams In Place
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Author : Manuel Gomez
language : en
Publisher:
Release Date : 1972
Forecasting The Properties Of Coal Seams In Place written by Manuel Gomez and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with Coal categories.
Design Of Drill Hole Grid Spacings For Evaluating Low Grade Copper Deposits
DOWNLOAD
Author : Richard F. Hewlett
language : en
Publisher:
Release Date : 1965
Design Of Drill Hole Grid Spacings For Evaluating Low Grade Copper Deposits written by Richard F. Hewlett and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with categories.
Monthly Catalog Of United States Government Publications Cumulative Index
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Author : United States. Superintendent of Documents
language : en
Publisher:
Release Date : 1979
Monthly Catalog Of United States Government Publications Cumulative Index written by United States. Superintendent of Documents and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with United States categories.
Using Probability Models As A Basis For Making Decisions During Mineral Deposit Exploration
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Author : Scott Wike Hazen (Jr.)
language : en
Publisher:
Release Date : 1966
Using Probability Models As A Basis For Making Decisions During Mineral Deposit Exploration written by Scott Wike Hazen (Jr.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with Mineral industries categories.
Some Generalized Probability Distributions With Special Reference To The Mineral Industries In Five Parts
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Author : Robert M. Becker
language : en
Publisher:
Release Date : 1965
Some Generalized Probability Distributions With Special Reference To The Mineral Industries In Five Parts written by Robert M. Becker and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Distribution (Probability theory) categories.
Stockpile Report To The Congress
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Author : United States. Office of Emergency Planning
language : en
Publisher:
Release Date : 1948
Stockpile Report To The Congress written by United States. Office of Emergency Planning and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1948 with Strategic materials categories.
Stockpile Report To The Congress
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Author :
language : en
Publisher:
Release Date : 1961
Stockpile Report To The Congress written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1961 with Strategic materials categories.