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Drilling – Equipment, Methods and Materials - Increased Bit Life Through Use of Extreme Pressure...
By C. van der Poel, R. L. Chuoke P. van Meurs
When an initially planar interface between two im-ttitcihle liquids is displaced at constant rate, U, nor-mat to the front, instability will occur for all rates greater than a critical rate. U, given
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IC 6949 Shaft- And Slope-Bottom Lay-Outs At Coal Mines - Introduction
By Robert L. Anderson
A shaft or slope bottom is that portion of a mine that is contiguous to the bottom of the main hoisting shaft or slope. It includes the terminal tracks for loaded-and empty-car storage, locomotive run
Jan 1, 1937
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Petrography and X-ray computerized tomography applied as an integral part of a rock mechanics investigation of discontinuities
By R. Sweennen, A. Vervoort, J. Caers
A case study is presented of the mechanical behaviour of fractures in the Westphalian A and B siliciclastic succession of mud-, silt- and sandstones with intercalating coal layers in the Campine basin
Jun 19, 1905
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Assessing risk in grade-tonnage curves in a complex copper deposit, northern Brazil, based on an efficient joint
By M. B. Fonseca
Risk quantification in grade-tonnage curves is critical for capital investment in mining projects and can be obtained through geostatistical simulations of orebodies. A practical difficulty may arise
Jan 1, 2003
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Lead Flotation from Rod and Ball Mill Discharge at Nanisivik Mines Limited
By J. Goyman, K. R. Rawling
"1.1 Location and Transportation ServicesNanisivik Mines Ltd. is located at latitude 73°, 3,200 km north of Montreal and 700 km north of the Arctic circle, on the south side of Strathcona Sound, which
Jan 1, 1984
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Murrin Murrin CCD1 Rake Mechanism Modification the Decision and the Result (3e495dbc-2cca-4184-88b3-9cc5914b2481)
By Brad Hewitt, Jeff Belke
"Murrin Murrin Operations has not had a successful beginning. Numerous reliability and operability issues many of which are the result of design decisions have been addressed through mechanical and op
Jan 1, 2005
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IC 7409 German High-Temperature Coal-Tar Industry
By E. O. RHODES
Germany's' wartime coal-tar industry had two main branches, which can best be considered individually because their raw materials, operations, and distributions were almost completely separated. One b
Sep 1, 1947
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Descaling Behaviour Of Stainless Steel Following Simulated Reheating
Experimental results are presented that test the hypothesis that the descaling behaviour of stainless steel slabs following reheating is controlled by interfacial roughening at the scale-steel interfa
Jan 1, 2003
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Gotthard-Base Tunnel, Section Faido Previous Experience With The Use Of The TBM
By Martin Herrenknecht
After the successful breakthrough at the end of 2006 of both TBMs into the multifunctional site Faido (MFS), in the middle of 2007 the two tunnel boring machines resumed the 12 km long section between
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Continuous loading at Brunswick Mining
By J. Jerome MacDonald, Stephen B. Flewelling
"In the base metals industry of today, operations required to continuously improve productivity and reduce unit production costs. Consistent with these goals is the improvement of the muck haulage cyc
Jan 1, 1989
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OFR-146(1)-82 Sprayfan System - Installation And Operation Manual - Volume II
By Steven K. Ruggieri
This report describes the use of the sprayfan auxiliary ventilation system for methane and dust control on continuous miner sections to potential users. The sprayfan auxiliary ventilation system is a
Jan 1, 1981
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IC 6901 Gold Mining And Milling In The Black Mountains, Western Mohave County, Ariz. ? Introduction
By E. D. Gardner
This is one of a series of papers describing mining and related subjects affecting mining in western mining districts and mineralized areas. The parts of this paper pertaining to current production, m
Jan 1, 1936
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OFR-80-80 Splice Testing Using A Figure-S Machine And A New Shuttle Car Simulation
By J. Tomlinson
Shuttle car trailing cable splices were tested for resistance to failure upon being subjected to repeated bending, abrasion, and tensile shocks using a new testing method that closely simulates shuttl
Jan 1, 1979
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The Practicalities of Monte Carlo Type Risk Analysis in Mining Projects
The profitability of individual ore blocks can be classed as clearly profitable, clearly not profitable, and those in between which are by nature quite sensitive to their major cost and revenue driver
Jan 1, 2002
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Avaliação Da Resistencia A Corrosão De Dois Aços Alto Manganês E O Aço 9% Níquel Em Solução De H2so4
By Mauro Andrés Cerra Flórez
O presente estudo visa avaliar a resistência à corrosão de dois aços alto manganês com relação ao aço 9% Níquel em solução eletrólito 0,001M de H2SO4. Para esta pesquisa foram utilizados dois aços com
Oct 30, 2017
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The Search For Asbestos Within The Peter Mitchell Taconite Iron Ore Mine, Near Babbitt, Minnesota
By Malcolm Ross
Asbestos crystallizes within rock formations undergoing intense deformation characterized by folding, faulting, shearing, and dilation. Some of these conditions have prevailed during formation of the
Jan 1, 2007
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Operation of La Mine Doyon
"At a current mining rate of 3,750 tons per day, La Mine Doyon is currently the largest gold mine in Canada. La Mine Doyon is an open pit gold mine located in the Abitibi area of Northwestern Quebec.
Jan 1, 1984
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Part II – February 1969 - Papers - The Massive Transformation in Copper-Zinc Alloys
By John W. Cahn, David A. Karlyn, Morris Cohen
The massive B(bcc) — am (fcc) transformation in Cu-Zn alloys has been studied isothermally by pulse-heating the retained ß phase from room temperature to the reaction temperatures. The transformatio
Jan 1, 1970
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Part IX – September 1969 – Papers - Liquid Immiscibility in Binary Indium Alloys
By Cuppam Dasarathy
The incidence of liquid inzmiscibility in binar)) indium alloys has been theoretically analyzed on the basis of the Hildebrand-Alott equation. Bedictions of miscibility or otherwise Imve in general be
Jan 1, 1970
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Manhattan Shaft, New York City Water Tunnel No. 3
By Edward (Ted) M. Dowey
Shaft 26B of New York City’s Third Water Tunnel was constructed by Frontier-Kemper Constructors, Inc. of Evansville, Indiana. The 176.8 m (580 ft) deep shaft will serve as the construction shaft for t
Jan 1, 1997