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 Monthly Catalog of United States Government Publications written by and published by . This book was released on 1995 with total page 1032 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Publications from the MSHA Informational Service Library written by Safety and Health Technology Center (Denver, Colo.). Informational Service Library and published by . This book was released on 1992 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Publications from the MSHA Informational Service Library written by Safety and Health Technology Center (Denver, Colo.). Informational Service Library and published by . This book was released on 1989 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Publications written by United States. Bureau of Mines and published by . This book was released on 1987 with total page 654 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 Monthly Catalogue United States Public Documents written by and published by . This book was released on 1995 with total page 868 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 1994 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mine Waste Disposal Technology written by and published by . This book was released on 1981 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fossil Energy Update written by and published by . This book was released on 1981 with total page 1002 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 1976 ERDA Authorization written by United States. Congress. House. Committee on Science and Technology. Subcommittee on Energy Research, Development, and Demonstration (Fossil Fuels) and published by . This book was released on 1975 with total page 902 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Innovations in Mining Backfill Technology written by F.P. Hassani and published by CRC Press. This book was released on 2021-07-28 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the 4th International Symposium held in Montreal, Oct.2-5, 1989. Paper topics include: review, laboratory testing, modelling and design, rockburst control, soft rock mining, and system design.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1986 with total page 936 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oversight Hearings written by United States. Congress. House. Committee on Science and Technology. Subcommittee on Energy Research, Development, and Demonstration (Fossil Fuels) and published by . This book was released on 1976 with total page 1390 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Annual Index written by and published by . This book was released on 1991 with total page 1128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Directory of Major Chinese Research Centers written by 科學研究与技朮開發機構要覽編輯委員會 and published by . This book was released on 1991 with total page 940 pages. Available in PDF, EPUB and Kindle. Book excerpt:
