Download or read book The Analysis of Mine Backfill Stability at the Golden Grove Project Scuddles Mine written by Ion Hann and published by . This book was released on 1991 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analysis of Mine Backfill Behaviour and Stability written by Zheming Zhu and published by . This book was released on 2002 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Stable mine backfill is necessary for safe working conditions, maximum ore recovery and underground and surface stability. Due to the fact that cement costs can be a significant part of the operating costs in large underground mines, the consumption of cement (or binder) should be minimized. Therefore, developing a safe and economical backfilling method for the large underground mining operations is very significant." --

Download or read book The Use of Past Backfill to Increase Long term Mine Stability and Ore Extraction written by Donovan Benton and published by . This book was released on 2013 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research and experience using various types of mine backfill - hydraulic, rock, paste, and blended - has indicated several benefits to the mining industry. Backfill is a general term that refers to any waste material that is placed into underground mine workings. Paste backfill in particular has shown environmental and economic benefits. Paste fill is generally produced from total mine tailings, meaning that it can include waste rock, sands, and clay-sized particles. It also contains no free water, meaning that water will not flow freely through it after placement causing post filling shrinkage. These characteristics make it the most environmentally "friendly" backfill option currently available. In addition, paste backfill is non-segregating and stackable, containing about 80% solids by weight, and having the consistency of medium-slump concrete, containing a cementitious content. These characteristics make paste backfill the best option for post-mining ground control in room and pillar coal mines. There are two main bodies of research regarding paste backfill. Thefirst studies its composition, application, and performance in past and present mining environments; the second studies its theoretical application for both mine support and waste disposal. While this research has provided much for the burgeoning technology of paste backfill, little has been done to investigate its economic application to the industry in room and pillar coal mines. At present, surface disposal of waste is generally cheaper than underground disposal. The goal of this thesis is to initiate discourse investigating the hypothesis that paste backfill may be used in such a way as to allow for increased coal extraction, which may then not only cover the additional costs of underground waste disposal, but potentially increase overall mine profitability. Inherent to this discourse will be a consideration of the following issues: The potential for increased extraction.Data from three Illinois Basin room and pillar coal mines were collected and used for this thesis. Theoretical computer modeling using LaModel and Phase2, empirical analysis of mine stability, physical testing using simulated paste backfill models, and comparative cost analyses considering current and hypothetical mining scenarios were conducted to identify these potential benefits and their consequences, both theoretical and practical.

Download or read book Mining and the Environment written by International Development Research Centre (Canada) and published by IDRC. This book was released on 1999 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mining and the Environment: Case studies from the Americas

Download or read book A Story of Operation Backfill written by and published by . This book was released on 1964 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book MassMin 2000 Proceedings written by and published by . This book was released on 2000 with total page 936 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Navy Cold Weather Handbook for Surface Ships written by and published by . This book was released on 1988 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Buyology written by Martin Lindstrom and published by Currency. This book was released on 2010-02-02 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: NEW YORK TIMES BESTSELLER • “A fascinating look at how consumers perceive logos, ads, commercials, brands, and products.”—Time How much do we know about why we buy? What truly influences our decisions in today’s message-cluttered world? In Buyology, Martin Lindstrom presents the astonishing findings from his groundbreaking three-year, seven-million-dollar neuromarketing study—a cutting-edge experiment that peered inside the brains of 2,000 volunteers from all around the world as they encountered various ads, logos, commercials, brands, and products. His startling results shatter much of what we have long believed about what captures our interest—and drives us to buy. Among the questions he explores: • Does sex actually sell? • Does subliminal advertising still surround us? • Can “cool” brands trigger our mating instincts? • Can our other senses—smell, touch, and sound—be aroused when we see a product? Buyology is a fascinating and shocking journey into the mind of today's consumer that will captivate anyone who's been seduced—or turned off—by marketers' relentless attempts to win our loyalty, our money, and our minds.

Download or read book Geotechnical Design for Sublevel Open Stoping written by Ernesto Villaescusa and published by CRC Press. This book was released on 2014-04-01 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presenting topics according to the conventional process used by most mining houses, this book covers the design and operation of sublevel open stoping. Summarizing state-of-the-art practices encountered during his 25+ years of experience, the author discusses increases in sublevel spacing, improvements in slot rising, and rock mass characterization, as well as methodologies to design open spans and pillars, rock reinforcement, and fill masses. He also addresses in situ stress concentration minimization, dilution control action plans, and techniques to back-analyze and optimize stope wall performance.

Download or read book Report of the Department of Mines for the Year written by Western Australia. Department of Mines and published by . This book was released on 1902 with total page 890 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Anagram Solver written by Bloomsbury Publishing and published by Bloomsbury Publishing. This book was released on 2009-01-01 with total page 719 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anagram Solver is the essential guide to cracking all types of quiz and crossword featuring anagrams. Containing over 200,000 words and phrases, Anagram Solver includes plural noun forms, palindromes, idioms, first names and all parts of speech. Anagrams are grouped by the number of letters they contain with the letters set out in alphabetical order so that once the letters of an anagram are arranged alphabetically, finding the solution is as easy as locating the word in a dictionary.

Download or read book Weapon System Safety Guidelines Handbook written by United States. Naval Ordnance Systems Command and published by . This book was released on with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Water Pollution Aspects of Street Surface Contaminants written by James D. Sartor and published by . This book was released on 1972 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surface Ship Operations written by United States. Naval Education and Training Command and published by . This book was released on 1978 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mineral Revenues written by and published by . This book was released on 1984 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies in ancient structures written by Yildiz technical university, Faculty of architecture and published by . This book was released on 1997 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Crossword Solver written by Anne Stibbs and published by Bloomsbury Pub Limited. This book was released on 2000 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: An aid to solving crosswords. It contains over 100,000 potential solutions, including plurals, comparative and superlative adjectives, and inflections of verbs. The list extends to first names, place names and technical terms, euphemisms and compound expressions, as well as abbreviations.