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 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 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 1992 with total page 1388 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 1992 with total page 1384 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 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 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 1992 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book State of the art Techniques for Backfilling Abandoned Mine Voids written by Jeffrey S. Walker and published by . This book was released on 1993 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bureau of Mines Research written by United States. Bureau of Mines and published by . This book was released on 1992 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Employment Safety and Health Guide written by and published by . This book was released on 1990 with total page 1356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes original text of the Occupational safety and health act of 1970.
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1991 with total page 1150 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 Geotitles written by and published by . This book was released on 1991 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research and Development Report written by and published by . This book was released on 1962 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gob Pile Stabilization Reclamation and Utilization written by Jerry L. Coalgate and published by . This book was released on 1973 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
