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RI 4101 Exam. of Zinc-Lead Mines in Wallapai Mining District, AZBy P. S. Haury
"INTRODUCTION Many ore deposits were discovered in the Wallapai Mining District, which covers the Cerbat Range in Mohave County, Ariz., during the early period of mining there from about 1865 to the 1
Aug 1, 1947
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Use of flotation to recover carbon matter from coal tailingsBy Gorki Davila, Irineu Brum
"Brazil has large reserves of coal (32 billion tons) located predominantly in the south of the country. Despite the relative ease of exploitation, these resources have been underestimated as a source
Jan 1, 2014
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Theoretical and Experimental Study on the Flexible Barrier Optimization Against Debris Flow RiskBy F. Vagnon, A. M. Ferrero, M. Pirulli, A. Segalini
"The topic of this study is the design of flexible fences to mitigate the risk due to debris flow phenomena by means of theoretical and experimental studies analysed in framework of the Rock Engineeri
Jan 1, 2015
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OFR-23-79 Study Of Methods To Improve Pillar Extraction Practices In Underground Coal Mines - Volume 1 - Pillar Safety And Production Practices - I. IntroductionThe following pages discuss the objectives, the background, the scope and a statement of the problem of the study of methods to improve the pillar extraction practices in underground coal mines. 1
Jan 1, 1975
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OFR-186(2)-83 Development Of A Continuous Shaft Lining System - Volume IIBy Robert Torbin
The objectives of the Continuous Shaft Lining (CSL) System are to reduce the costs, safety hazards, and time currently required in lining mine shafts with concrete. The CSL will line machine bored sha
Jan 1, 1983
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Simulators for the Design, Optimization and Control of Gold Ore Processing PlantsBy L. R. P. de Andrade Lima, D. Hodouin
The paper presents a survey of the possibilities of the simulation techniques for improving the design and operation of gold processing plants. The procedure to construct kinetic models that are used
Jan 1, 2005
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Research and Natural ResourcesBy N. H. Grace
"IntroductionA STRIKING FEATURE of the past twenty years has been the application of organized scientific and industrial research to problems of national defence and security and to the development of
Jan 1, 1952
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Ball Clay Developments In The AmericasBy T. F. Deems
The nature, usage and comparatively rare occurrence of ball clay is described. The importance of these white firing plastic clays in ceramics, particularly in the production of industrial sanitary war
Jan 1, 1997
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Evaluation Of Giant Bamboo Fibers Components By Infrared SpectroscopyBy Gabriel Oliveira Glória
Due to growing concern about the ambient impacts, lignocellulosic fibers are been investigated to replace the synthetic ones in polymer composites The giant bamboo fiber, a relatively unknown lignocel
Aug 16, 2017
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Friction bolt performance over the past ten years in Australian minesBy T M. Nester, D J. Reardon, A N. Page, B J. Barsanti
The load capacity of a friction bolt has long been regarded as 4 t/m of embedment for ground support design analysis and supported by in situ pull test results. In recent years, the authors have obser
Nov 29, 2022
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New Method for Sulfate Removal and RecoveryBy P. James
"INTRODUCTION High sulfate (SO4-2) levels often occur in MIW (mining influenced water) either as the result of oxidation of sulfide minerals exposed by mining activity or by deliberate addition – comm
Jan 1, 2015
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Characterization And Treatment Of Selenium In Water Discharged From Surface Coal Mining Operations In West VirginiaBy T. Harrison
Surface coal mines in West Virginia are receiving stringent NPDES discharge limits for total recoverable selenium. With limits in the low parts-per-billion range, selection and implementation of prope
Jan 1, 2010
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IC 8851 Selection Of Lixiviants For In Situ Uranium LeachingBy Daryl R. Tweeton
This Bureau of Mines publication provides information to assist in selecting a lixiviant (leach solution) for in situ uranium leaching. The cost, advantages, and disadvantages of lixiviants currently
Jan 1, 1981
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Oxidized Pellet Preparation from Refractory Specularite Concentrates Using Modified Humic Acid (Mha) BindersBy Guohua Bai, Yuanbo Zhang, Guihong Han, Zijian Su, Daoyuan Zhang
"Specularite ores have poor hydrophilicity and ballability as well as inferior high-temperature reactivity, which restrict the large-scale application of them in the pelletizing and sintering producti
Jan 1, 2011
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Microstructure Modification for Semisolid Slurry of Al-4.Swt. %Cu Alloy by Pulse Magneto-Oscillation TreatmentBy Yongyong Gong, Qijie Zhai, Zhichen Zhang, Qixin Li, Zhishuai Xu
"Microstructure of semisolid slurry of Al-4.5wt.%Cu alloy was investigated with pulse magnetooscillation (PMO) treatment, the results showed that the PMO treatment can refine the crystal structures of
Jan 1, 2014
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Keys to successful monitoring of evaporite and coal minesBy E. De Souza
The instrumentation and monitoring of rock behaviour have played an important and necessary role in the practice of potash, rocksalt, gypsum, trona and coal mining. The art of rock instrumentation app
Jan 1, 1998
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Application of Laser Scanning for Rock Mass Characterization and Discrete Fracture Network Generation in an Underground Limestone MineBy Juan J. Monsalve, Nino Ripepi, Richard Bishop, Jon Baggett
"Terrestrial laser scanning (TLS) is a useful technology for rock mass characterization. A laser scanner produces a massive point cloud of a scanned area, such as an exposed rock surface in an undergr
Jan 1, 2018
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The Practical Examination of Mineral ProspectsBy J. A. Reid
THE views and observations expressed herein on this old but constantly recurring question are our own, no effort having been made to align them with standard texts. Therefore, while they may find gene
Jan 1, 1945
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Flow-field Numerical Simulation and the Application of Ultra-fine Stirred MillBy G. W. Zhang
Ultra-fine Stirred Mill is a kind of high energy efficient equipment for ultra-fine grinding, and has been the mainstream equipment in the submicron powder and slurry industry. This paper mainly descr
Jan 1, 2014
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Mr. Terzian's Luncheon AddressMR. McKEEVER: I think we had to start some- where. The proceeds of the beltbuckles and hard hat stickers will certainly be a beginning in a scholarship for some of our young people. And maybe, you kno
Jan 1, 1982