|Series||Report of investigations (United States. Bureau of Mines) -- 5355|
|Contributions||Haley, W., Dowd, J.|
Mechanical longwall coal mining in the United States is described in which a German coal planer was employed. Operations at five coal mines are summarized. They were the Quality No. 2 coal mine in Arkansas, Pine No. 1 coal mine in Pennsylvania, and Amherst No. 4, Island Creek No. 22, and Stotesbury No. 8 coal mines in West Virginia. Modified longwall mining with a German coal planer (plow) in the Pocohontas No. 4 coal bed, Helen, W. Va. (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors / Contributors: Wilbur A Haley; James J Dowd; Louis A Turnbull; United States. Bureau of Mines. Modified Longwall Mining with a German Coal Planer (Plow) in the Pocahontas No. 3 Coalbed, Keystone, W. Va. Description: Plan for modified longwall mining with a German coal planer (Plow) in the Pocahontas No. 3 coal bed, Keystone, West Virginia. Credit Bureau of . Modified longwall mining with German coal planers: summary of operations at five coal mines / By Wilbur A. Haley and James J. Dowd. Abstract "Int.-Bu. of Mines, Pgh., Pa. "--p. "August "Includes bibliographical of access: Internet.
Modified longwall mining with a German coal planer (plow) in the Pocohontas No. 4 coal bed, Helen, W. Va. /([Pittsburgh, PA]: U.S. Dept. of the Interior, Bureau of Mines, ), by Wilbur A. Haley, Louis A. Turnbull, and James J. Dowd (page images at HathiTrust). Abstract. Progress report no. 1 considered as being Report of investigations no. , Modified longwall mining with a German coal planer (plow) in the Pocahontas no. 4 coal bed, Helen, W. Va."Int. - Bu. of Mines, Pgh., Pa. "--p. "June "Includes bibliographical of access: Internet. Longwall mining Hardcover – January 1, by Syd S Peng (Author) › Visit Amazon's Syd S Peng Page. Find all the books, read about the author, and more. See search results for this author. Are you an author? Learn about Author Central. Syd S Peng (Author) Reviews: 1. Table of ContentsLongwall Mining Design FactorsSeam SequencingInteraction for Descending OrderPressure Bulb TheoryArching Theory in MiningInteraction for Ascending OrderSubsidence TroughInterseam ShearingSimultaneous and Random Orders of ExtractionGate Road Pillar DesignYield Pillar ApproachConventional Longwall Mining ApproachOther Design ConsiderationsOrientation of .
Fully mechanized Longwall Coal Production. HD Mining - Fully Mechanized Longwall Coal Mining Technology. Caterpillar has extensive experience in the design o. With a = MPa and b = , the gob achieved pre-mining vertical stress at a distance of ∼55 m from the longwall face, similar to what was obtained by Abbasi et al. 51 in modeling a longwall. Longwall Mining, 3 rd edition will be of interest to professionals and academics in the field of mining engineering specifically, serving both as a reference work and an (under)graduate textbook, but will also interest civil, geomechanical and geological engineers and rock mechanics professionals, as well as coal operators, mining consultants. The more common geohazards in longwall coal mining which are focused in this research include rockburst, coalburst and coal/gas outburst. Rockburst is a common type of geohazards resulted in dynamic instability of the underground structures in longwall mining, which directly affects the safety of miners, equipment and mining operations.