Download or read book Modified Longwall Mining with a German Coal Planer plow in the Pocohontas No 4 Coal Bed Helen W Va written by Wilbur A. Haley and published by . This book was released on 1952 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modified Longwall Mining with a German Coal Planer written by Wilbur A. Haley and published by . This book was released on 1954 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Longwall Mining with a German Coal Planer written by D. S. Harper and published by . This book was released on 1963 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modified Longwall Mining with German Coal Planers written by Wilbur A. Haley and published by . This book was released on 1957 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Longwall Mining in Bituminous Coal Mines with Planers Shearer Loaders and Self advancing Hydraulic Roof Supports written by J. J. Shields and published by . This book was released on 1967 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report of Investigations written by and published by . This book was released on 1952 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book List of Publications Issued by the Bureau of Mines with Subject and Author Index written by United States. Bureau of Mines and published by . This book was released on 1949 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report of Investigations no 2002 to No 7380 written by and published by . This book was released on 1954 with total page 476 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 Investigation of Simon Coles Manganese Deposit Bedford County Pa written by W. H. Kerns and published by . This book was released on 1948 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Roof Movement Study of Mechanized Retreating Longwall Operation Lancashire No 15 Mine Bakerton Cambria County Pa written by Anthony J. Barry and published by . This book was released on 1954 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mechanized Longwall Mining written by James J. Olson and published by . This book was released on 1977 with total page 212 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 Report of Research and Technologic Work on Coal and Related Investigations written by R. L. Brown and published by . This book was released on 1954 with total page 112 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 1954 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Bureau of Mines Investigations of Coal and Its Products 1950 to 1955 written by United States. Bureau of Mines and published by . This book was released on 1958 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bureau of Mines Report of Investigations written by and published by . This book was released on 1952 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt:
