Download or read book Block caving Mining Methods and Costs Bagdad Mine Bagdad Copper Corp Yavapai County Ariz written by William R. Hardwick and published by . This book was released on 1959 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Information Circular written by and published by . This book was released on 1960 with total page 768 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 792 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Methods of Working Coal and Metal Mines written by Seth D. Woodruff and published by Elsevier. This book was released on 2013-10-22 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt: Methods of Working Coal and Metal Mines, Volume 3 discusses the extraction of mineral deposits, which involves the driving of development openings, from the surface or a central shaft, to the "block out portions of the deposit. This book is divided into three parts. Part A describes the coal mining methods, which include pillar mining systems and long-wall mining. Economics of coal face mechanization is also discussed. In Part B, the classification of stoping systems, which is comprised of pillar-supported stopes, timber and fill supported stopes, and slicing or caving systems, is elaborated. This part also emphasizes the mining bedded metalliferous ores, as well as the costs and other factors affecting the choice of mining systems. Part C deliberates the surface mining methods, which consist of strip mining of coal, open-pit mining, and stability of pit slopes. This publication is intended for mining engineers, but is also useful to students and researchers conducting work on the application of extracting and processing minerals.

Download or read book A Study of Selected Rock Excavations as Related to Large Nuclear Craters written by and published by . This book was released on 1967 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analogies between nuclear and conventional excavations are developed from a tabulation of data from 153 mine, quarry, roadway, and dam excavations. The following factors were used as the basis for tabulation of conventional excavation data: purpose, location, precipitation, temperature, ground water level, lithology, mass strength, structural pattern, slope plan, slope profile, depth of excavation, slope height, average inclination, and stability. It was found that average slope inclination tends to be greatest for hard material and for material lacking a well-developed structure, and that inclination tends to de- crease with increasing slope height for excavated slopes reported to be stable. The authors conclude that good analogies are to be found in shape, slope height, depth of excavation, and slope inclination. Loadings of waste material at the rim of some open pit mines may be analogous to ejecta on the lips of nuclear craters. Rubble zones found in some open pit mines may be analogous to the fallback zones of nuclear craters. Differences between preshot and postshot characteristics of cratered media must be appreciated in evaluating analogies between features of conventional excavations and preshot features of nuclear excavation sites. Brief descriptions of 21 selected excavations are presented in Appendix A. The results of this study serve as an aid to judgment of nuclear crater slope stability. Potential subjects for further study are identified.

Download or read book National Union Catalog written by and published by . This book was released on 1956 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes entries for maps and atlases.

Download or read book Bibliography of Investment and Operating Costs for Chemical and Petroleum Plants written by United States. Bureau of Mines and published by . This book was released on 1930 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mineral and Water Resources of Arizona written by Geological Survey (U.S.) and published by . This book was released on 1969 with total page 662 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mineral and Water Resources of Arizona written by United States. Congress. Senate. Interior and Insular Affairs and published by . This book was released on 1969 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dictionary Catalog of the Department Library written by United States. Department of the Interior. Library and published by . This book was released on 1967 with total page 818 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geological Survey Professional Paper written by Geological Survey (U.S.) and published by . This book was released on 1956 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Geological Survey Professional Paper written by and published by . This book was released on 1956 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geological Survey Professional Paper written by and published by . This book was released on 1956 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geology and Mineral Resources of the Ivanpah Quadrangle California and Nevada written by Donnel Foster Hewett and published by . This book was released on 1956 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt: The geology of an area covering 3,900 square miles in the northeastern part of Mojave Desert, including mountain ranges 6,000-7,000 feet in altitude.

Download or read book Bibliography of Investment and Operating Costs for Chemical and Petroleum Plants January December 1959 written by Sidney Katell and published by . This book was released on 1960 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Committee Prints written by United States. Congress. Senate. Committee on Interior and Insular Affairs and published by . This book was released on 1968 with total page 1466 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geology and Ore Deposits of the Bagdad Area Yavapai County Arizona written by Charles Alfred Anderson and published by . This book was released on 1955 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study of the Bagdad porphyry copper deposit and its geologic setting.