Download or read book Computing Ore Reserves by the Polygonal Method Using a Medium size Digital Computer written by Richard F. Hewlett and published by . This book was released on 1962 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Engineers at the Bureau of Mines Denver Mining Research Center have been a research program investigating the theory and application of mine sampling. Part of this program is an investigation of the efficiency of sampling methods that involves development of sampling-method theory through simulating ore-deposit samples and assays, using - electronic digital computer. Theoretical developments are checked against actual ore-deposit sampling, assay, and production data by the commonly used polygonal and triangular methods of computing grade and tonnage of ore reserves. To speed the computing procedures, a program has been developed utilizing a medium-size digital computer for computing ore reserves by the polygonal method. This program calculates nine prismoids per minute at a total cost of $0.21 per prismoid. The complete program, written for an augmented IBM 650 computer, is described in detail; it can be used without change for computing ore reserves for a low-grade deposit. Modifications necessary to convert the program to compute ore reserves for virtually any other type of deposit or grouping of ore horizons also are given; however, the program is limited to using only vertical drill-hole data.
Download or read book Computing Ore Reserves by the Triangular Method Using a Medium Size Digital Computer written by Richard F. Hewlett and published by . This book was released on 1963 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design of Drill hole Grid Spacings for Evaluating Low grade Copper Deposits written by Richard F. Hewlett and published by . This book was released on 1965 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Report of Investigations written by and published by . This book was released on 1965 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Operating a Pressure gasification Pilot Plant Using Pulverized Coal and Oxygen written by D. J. Stoops and published by . This book was released on 1961 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book In Situ Retorting of Oil Shale written by Edward L. Burwell and published by . This book was released on 1973 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Computing Reserves of Mineral Deposits written by Constantine C. Popoff and published by . This book was released on 1966 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Statistical Analysis of Gamma ray Log Sample Data from a Uranium Deposit Ambrosia Lake Area McKinley County N Mex written by George R. Schottler and published by . This book was released on 1965 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Generalized Probability Distributions with Special Reference to the Mineral Industries in Five Parts written by Robert M. Becker and published by . This book was released on 1965 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalog of Books and Reports in the Bureau of Mines Technical Library Pittsburgh Pa written by United States. Bureau of Mines. Technical Library, Pittsburgh and published by . This book was released on 1968 with total page 778 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Minerals Yearbook written by and published by . This book was released on 1964 with total page 1330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of North American Geology written by and published by . This book was released on 1968 with total page 1128 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1919/28 cumulation includes material previously issued in the 1919/20-1935/36 issues and also material not published separately for 1927/28. 1929/39 cumulation includes material previously issued in the 1929/30-1935/36 issues and also material for 1937-39 not published separately.
Download or read book Geological Survey Bulletin written by and published by . This book was released on 1963 with total page 1134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications Cumulative Index written by United States. Superintendent of Documents and published by . This book was released on 1980 with total page 1284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book List of Bureau of Mines Publications and Articles with Subject and Author Index written by United States. Bureau of Mines and published by . This book was released on 1966 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comparison of the Triangular Polygonal and a Statistical Method of Computing Grade and Tonnage of Ore for the Silver Bell Oxide Porphyry Copper Deposit written by Richard F. Hewlett and published by . This book was released on 1970 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Use of a Digital Computer in Determination of Optimum Rate of Production for an Open Pit Project written by Woong Soo Kim and published by . This book was released on 1964 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
