Download or read book Sealing Openings in Abandoned Mines by Pneumatic Stowing written by S. D. Maksimovic and published by . This book was released on 1982 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sealing Openings in Abandoned Mines by Pneumatic Stowing written by Slavoljub D. Maksimovic and published by . This book was released on 1982 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Building Seals by Pneumatic Stowing in Mine Closure Operations written by S. D. Maksimovic and published by . This book was released on 1982 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Blind Pneumatic Stowing in Voids in Abandoned Mines written by Paul F. Sands and published by . This book was released on 1990 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Building Seals by Pneumatic Stowing in Mine Closure Operations written by Slavoljub D. Maksimovic and published by . This book was released on 1982 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Building Seals by Pneumatic Stowing in Mine Closure Operations written by and published by . This book was released on 1982 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Blind Pneumatic Stowing in Voids in Abandoned Mines written by Paul F. Sands and published by . This book was released on 1990 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Above ground Demonstration of Pneumatic Stowing Technologies written by and published by . This book was released on 1990 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: Placement of crushed aggregate by pneumatic methods to provide ground support in abandoned mines was simulated using specially designed discharge assemblies under controlled conditions. These tests were performed to determine the material throw distance, material trajectory, degree of mine roof contact achieved, and in-place density of the stowed material. Pneumatic methods may be used to place fill in over 200 linear ft of limited-height mine opening from a single location by directing the discharge in different directions. Mine roof contact can be achieved by the fill over more than 100 ft of this length. The fill material is placed in a medium dense condition and is estimated to provide a moderate degree of roof support. The pneumatic stowing method is technologically feasible for backfilling abandoned mines, especially in areas where water for hydraulic flushing is in short supply.
Download or read book Report of Investigations written by and published by . This book was released on 1982 with total page 962 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Removal of Leachable Metals and Recovery of Alumina from Utility Coal Ash written by Robert C. Gabler and published by . This book was released on 1983 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bureau of Mines Research written by and published by . This book was released on with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Frictional Ignition with Coal Mining Bits written by Welby G. Courtney and published by . This book was released on 1990 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laboratory Wear Testing Capabilities of the Bureau of Mines written by Robert Blickensderfer and published by . This book was released on 1985 with total page 816 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 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1983 with total page 1050 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design of Bulkheads for Controlling Water in Underground Mines written by Gregory J. Chekan and published by . This book was released on 1985 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
