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Tunnel blast drill hole surveying – Benefits and MethodologiesBy G. Adderley, A. Wetherelt
The problems of poor drilling in underground operations have been highlighted on many occasions. Incorrect collaring and poor angular deviation can all lead to an increased block size, dilution, over-
Jan 1, 2009
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Measurement and Analysis of Ground Movement and Load Redistribution at a Longwall Mine in Central UtahTo gather additional field data from the western United States, researchers from the National Institute for Occupational Safety and Health (NIOSH) installed an array of field instrumentation at a long
Jan 7, 2020
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Cyclometer SurveysFOR rapidly marking in geological and topographical features on parish plans, the author has used the Veeder cyclometer with very satisfactory results. A simple Veeder cyclometer, usually retailed at
Jan 1, 1916
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Avaliação Da Composição Química, Densidade De Inclusões E Pites Em Cupons De Perda De MassaBy Laís Couto dos Santos
A corrosão é definida como sendo um conjunto de fenômenos de deterioração dos materiais em consequência de reações entre o material e o meio. Em instalações metálicas, tais processos são monitorados a
Aug 17, 2017
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RI 4882 Volumetric Determination Of Small Quantities Of Uranium - With Special Reference To Errors Associated With Use Of Jones ReductorBy Claude W. Sill
In the usual volumetric determination of uranium, the solution containing uranium is reduced in a Jones reductor, yielding a mixture of trivalent and tetravalent uranium; the trivalent uranium is oxid
Jan 1, 1952
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The Utilization Of Static-Load Piledriving Near Structures That Are Sensitive To Vibration - Static-Load Piledriving: - Concept;By Robert A. Field
Static-Load Piledriving utilizes a hydraulic push to facilitate the installation of a pile. The pile is not rotated, impacted or vibrated. A smooth pushing force advances the pile incrementally into t
Jan 1, 1997
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The Future of Coal -Carbon Feedstock Gasification-By Paul R. Clark
Outline of Presentation ? Brief review of gasification and IGCC ? Polygenerationand its potential ? Why gasification today ? Major technology providers and their activities ? US initiatives ?
May 1, 2006
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Stratiform Basic Bodies Within The Yilmia Ophiolites, Western AustraliaThe authors describe two stratiform intrusions within a two miles thick ophiolite belt, one of the many ophiolite (serpentine) belts of the eugeosynclinal sequences of the Kalgoorlie System (metamorph
Jan 1, 1969
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Some Factors Affecting the Behaviour of Lead During and Subsequent to Deformation by Rolling and PressingDuring the course of the major research in the Metallurgy Department of the University of Melbourne into the creep characteristics of lead and .its dilute alloys, it has been the practice to prepare t
Jan 1, 1940
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Metallic Wires Elaboration Directly From Thin Liquid JetsBy Ludovic Charpentier
Production of metallic wires directly from liquid jets would avoid drawbacks of extrusion (space needed, damaging, cost?) and enable recycling. But liquid jets tend to break, due to capillary instabil
Jan 1, 2006
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Geotechnical Challenges in Cave Monitoring – a Modern ApproachBy A Jäger, J L. Lett, J Rachocki and B Mobilio
The Newcrest Mining Limited Cadia East Panel Cave mines near Orange, New South Wales, Australia commenced production 1200 m below the surface in May 2014. Understanding the mine-wide impact caving had
May 9, 2016
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CPT - Guided Installation Of Pressure-Grouted Displacement PilesBy Mark M. Petersen
As part of the addition of eight new combined cycle generating units at the Florida Power & Light Sanford Plant, 2,129 piles were to be installed. The existing plant elements were supported on driven
Jan 1, 2002
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Part VIII - Communications - Alumina Transformations in A!-AI,O, Alloys (SAP) Below the Matrix Melting PointBy G. Beghi, G. Piatti
THE authors examined the problem of the gradual transformation of Al2O3 from the transition phases normally encountered in SAP (r -x-n)1-3 to the stable a phase. This phenomenon is well-known at tempe
Jan 1, 1967
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ESTUDO DO EFEITO DO ELEMENTO DE LIGA ZIRCÔNIO SOBRE AS PROPRIEDADES ELETROMECÂNICAS DA LIGA Al-0,05%Cu-[0,4]%Fe PARA USO EM TRANSMISSÃO E DISTRIBUIÇÃO DE ENERGIA ELÉTRICABy Everaldo Afonso Fernandes
O estudo do efeito do elemento de liga Zircônio, nos teores 0,15% e 0,22%, sobre a liga AL-0,05%Cu-[0,35-0,45]%Fe foi realizado com a finalidade de caracterizar o desempenho em cabos e fios para fins
Aug 8, 2018
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Experiences With Deep Foundations In Shanghai - SynopsisBy Y. X. Tong
The simplicity off Ø=0 analysis has been taken advantage of to evaluate the geotechnical problems of open caissons, slurry trench walls and piles in Shanghai. Undrained shear strengths obtained by va
Jan 1, 2010
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Increased Rolling Mill Capacity at Kwinana and NewcastleThe large increase in secondary industries in this country, during the war and post war periods, has caused a shortage of capacity for the production of merchant bar.To overcome this shortage, an expa
Jan 1, 1957
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Improving reliability and productivity at Syncrude Canada Ltd. through materials research: past, present, and futureBy S. Hoskins, S. Chiovelli
"The annual budget for the repair and maintenance of equipment at Syncrude Canada Ltd. is in excess of $450 million. Of this amount, a significant portion can be attributed to the loss of material on
Jan 1, 2004
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Resource evaluation of Nsuta manganese carbonate deposit, GhanaBy S. Al-Hassan
The deposit has been exploited for Mn oxide and carbonate since 1916. Known reserves of MnO, however, are almost depleted and the survival of the mine will depend on the exploitation of the carbonate.
Jun 19, 1905
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Comparison Of Ore Pass Computer Simulations For Designs Against Dynamic LoadBy K. Biswas, S. Iverson, S. J. Jung
Computer modeling of rock flow in ore passes is being investigated and compared using MSC Soft-ware’s Working Model 2D1 (WM2D) and Itasca Corp.’s Particle Flow Code in Two Dimensions (PFC2D). This wo
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Aumento Da Eficiência Energética Com O Pré- Aquecimento Do Ar E Do Gás Através Da Recuperação Do Calor Dos Gases De Exaustão Dos Regeneradores Do Alto FornoBy Joaquim Luiz Monteiro de Barros
Com base na atual situação de restrição de disponibilidade e do custo da energia no Brasil, sistemas tipo Heat Pipe (tubos de calor) tendem a ser cada vez mais utilizados na recuperação do calor dos g
Sep 25, 2017