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Mössbauer Investigation on the Formation of Fe-containing Minerals in Coal during Gasification
By F. B. Waanders
Coal, as energy resource, possesses numerous characteristics and properties which all have an influence on its gasification behaviour. The two properties considered as critically important when evalua
Jan 1, 2014
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The Determination of Silver in Lead Sulphide Concentrate by Atomic Absorption Spectroscopy
By Greaves M. C, Amos M. D
A study was made of the instrumentation and technique of atomic absorption spectroscopy developed by Walsh of the Commonwealth Scientific and Industrial Research Organisation (C.S.I.R.O.), Australia.T
Jan 1, 1961
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Foamed Grout Controls Underground Coal-Mine Fire
By Joseph J. Feiler
Fires in underground coal mines are persistent problems anywhere in the world that coal is mined. Coal fires pose safety and health hazards in the form of mine subsidence, loss of energy reserves, de
Jan 1, 2000
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Mining - Mechanics of Rock Slopes
By D. H. Trollope
In engineering in general, close agreement between theoretical predictions and structural performance is rare—this is particularly true in rock slopes. Since the complexity of natural arrangements mak
Jan 1, 1961
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Machine Monitoring and Automation as Enablers of Lean Mining
By L Mottola
Three decades ago mining companies, principally in North America, aided by machine and explosive manufacturers, started significant attempts to develop and implement automated mining systems, mainly u
Nov 22, 2011
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IC 7213 Dredging Pennsylvania Anthracite ? Foreword
By Joseph A. Corgan
The river- or dredge-coal industry of Pennsylvania is conducted on many of the rivers and creeks that drain the Pennsylvania anthracite fields. Coal thus recovered found its way into the streams as co
Jan 1, 1942
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Permian and Mesozoic Tectonic and Structural Events in the Bowen and Surat Basins and New England Orogen, Southwest Pacific Rim
By J M. Totterdell
The Permian-Triassic Bowen Basin and the Jurassic-Cretaceous Surat Basin evolved in a backarc tectonic setting behind an active convergent plate margin in eastern Gondwana. Several extensional (Early
Jan 1, 1995
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Influence Of Metallic And Eaf Type On Specific Consumtions And Productivity
By Jorge Madias
O trabalho está baseado na análise de dados de perto de 200 fornos elétricos a arco de diferente design: convencional, de corrente contínua, de carcaças gémeas, com preaquecimento de sucata no transpo
Oct 30, 2017
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OFR-54-81 Improving Surface Coal Refuse Disposal Site Inspections
By R. A. Meister
The study on improving surface coat refuse disposal site inspections included surface inspections of 15 refuse disposal sites. Monthly aerial photos were taken of the sites and computer methods were u
Jan 1, 1980
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1978 Raw Nonfuel Mineral Production
The value of raw nonfuel mineral materials production totaled an estimated $19.7 billion in 1978. The record 1978 value exceeded by 13 percent the 1977 value of $17.5 billion. This raw mineral output
Jan 1, 1979
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The Hellyer Mine - Feasibility to Production with Confidence
For its Hellyer project, Aberfoyle sought to establish a high degree of confidence in all aspects of the feasibility study. Accurate capital and operating cost estimates were an integral and essenti
Jan 1, 1990
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RI 9676 - Explosion Effects on Mine Ventilation Stoppings
By Eric S. Weiss
The National Institute for Occupational Safety and Health (NIOSH) and the Mine Safety and Health Administration (MSHA) conducted joint research to evaluate explosion blast effects on typical U.S. mine
Jan 1, 2008
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Prospecting for Fine Gold Using a Paper Chromatographic Method
By Lever R. R
The paper discusses assay methods generally used when prospecting for gold, and also the applicability of various chemical methods, it describes a new paper chromatographic technique.for making fairly
Jan 1, 1959
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Selective-Reductive Leaching of Manganese from Low-Grade Manganese Ore Using Tannic Acid as Reductant Mining, Metallurgy and Exploration (eba8cc62-7158-4f14-935d-253bd3b1dc96)
By Eti Purwaningsih, Widi Astuti, Erik Prasetyo
Selective-reductive leaching of manganese from low-grade manganese ore using tannic acid as a reductant in acidic media was demonstrated by XRD, SEM-EDX characterization, and batch leaching studies at
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Selective-Reductive Leaching of Manganese from Low-Grade Manganese Ore Using Tannic Acid as Reductant Mining, Metallurgy and Exploration
By Eti Purwaningsih, Widi Astuti, Erik Prasetyo
Selective-reductive leaching of manganese from low-grade manganese ore using tannic acid as a reductant in acidic media was demonstrated by XRD, SEM-EDX characterization, and batch leaching studies at
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Transporteur Multi-Fonctionnel Pour Forage
By Marcel Labbé
La largeur de l?armature peut être modifiée selon les besoins du client entre 48 " et 64" de largeur totale, donc 2 sections de 24" à 32". Ceci permet à l?opérateur d?effectuer le démantèlement de l?é
May 1, 2001
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Evolution of the concept of the liberation factor and a surprising new result
By D François-Bongarçon
After a review of the progresses made on the liberation factor theory since its inception by Gy (1982), a new and surprising result of great practical importance is presented: the liberation factor. F
May 9, 2017
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OFR-3(1)-75 Design And Development Of Protective Canopies For Underground Low Coal Electric Face Equipment, Including Shuttle Cars
By R. Farrar
Protective canopies for conventional electric face equipment, including shuttle cars, operating in low coal (less than 48 inches) were designed, fabricated, installed and evaluated on in-mine machines
Jan 1, 2012
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Prediction of Near-Field Rock Damage Due to Production Blasting in Limestone Quarries, Japan
This paper presents the near-field rock damage owing to production blasting in limestone quarry in the western region of Japan. The study's purpose is to learn the mechanism of crack development
Dec 6, 2010
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Subsidence monitoring at a shallow partial extraction room-and-pillar mine in midwestem United State
By Yoginder P. Chugh
Subsidence may be observed above partial extraction shallow room-and-pillar mines where the coal seam(s) is associated with weak and thick claystone in the floor. This paper presents results of subsid
Jan 1, 1989