Mircevska V.,Ss. Cyril and Methodius University of Skopje |
Bickovski V.,Ss. Cyril and Methodius University of Skopje |
Aleksov I.,Mining Institute |
Hristovski V.,Ss. Cyril and Methodius University of Skopje
Engineering Analysis with Boundary Elements | Year: 2013
Fluid-structure interaction phenomenon, by its nature, is three-dimensional and consequently dependant on the shape of a dam and canyon that in-fact defines the spatial domain where the generated acoustic waves are spread. The complex topography of the terrain in general requires sufficiently large extent of reservoir to be included in the model, which is undoubtedly feasible if BEM technique is used. This paper shows that the irregular canyon shape dictates the most adequate location of the truncation surface that gives the smallest negative impact on calculation accuracy. The derived conclusions are based on various 3D analyses of a rigid dam-reservoir system with different shapes and lengths of the fluid domain, where the fluid is treated as incompressible and inviscid. The presented work contributes towards disclosure of the topographic site effects and towards promotion of simple and effective procedure for generation of BE mesh, which is quite accurate in following the topology of the terrain. © 2013 Elsevier Ltd.
News Article | November 25, 2016
LANCASTER, OH, November 25, 2016-- John Katlic has been included in Marquis Who's Who. As in all Marquis Who's Who biographical volumes, individuals profiled are selected on the basis of current reference value. Factors such as position, noteworthy accomplishments, visibility, and prominence in a field are all taken into account during the selection process.Over the course of his career, Mr. Katlic amassed a highly impressive resume. After serving in World War II and the Korean War, he returned to the United States and completed his education at West Virginia University, from which he earned a Bachelor of Science and a Master of Science, both in the engineering of mines, in 1955 and 1961, respectively. Mr. Katlic proceeded to join the Consolidation Coal Company in Morgantown, W.Va., as a mine superintendent, and after three years, was promoted to general superintendent. Approximately four years later, he began a lasting relationship with Eastern Associated Coal in Pittsburgh, and served the corporation as a senior mining engineer, division manager, and vice president of personnel safety and industrial relations. Mr. Katlic returned to the Consolidation Coal Company as a vice president from 1973 to 1975, but left once more to accept the position of executive vice president of administration engineering and government relations at Island Creek Coal Company. He also garnered expertise as a mine surveyor at Rochester & Pittsburgh Coal Company, the senior vice president of fuel supply at the American Electric Power Service Corp, and as the president of Southern Ohio Coal, Central Ohio Coal, Windsor Coal, and Conesville Coal, all subsidiaries, before he retired in 1993.One of the highlights of Mr. Katlic's career was developing patents for a mining machine indicator and dust control in longwall mining. He is also proud to have been a member of the negotiating team of the National Bituminous Coal Wage Agreement through the Joint Industry Development Committee in 1978, and completing consulting projects in Russia, Siberia, Kazakhstan, and South Africa. Additionally, Mr. Katlic authored "Miner Jack and His Unforgettable People in the Coal Fields," in 2006 and copyrighted the short story, "Heaven is a Room Full of Dogs," and gained membership to a variety of professional organizations. Some of these include the American Institute of Mining, the Society of Mining Engineers, the National Mine Rescue Association, and the National Mining Association.Mr. Katlic's hard work and dedication have not gone unnoticed. He was named Man of the Year by Coal Age Magazine in 1987, won the Erskine Ramsay Medal from the American Institute of Mining and the Kingery Safety Award from the Pennsylvania Coal Mining Institute of America, both in 1995, and was inducted into the West Virginia Coal Hall of Fame in 2000. Further, Mr. Katlic was selected for inclusion in numerous volumes of Who's Who in America, Who's Who in the Midwest, Who's Who in the World, and Who's Who in Finance and Business.About Marquis Who's Who :Since 1899, when A. N. Marquis printed the First Edition of Who's Who in America , Marquis Who's Who has chronicled the lives of the most accomplished individuals and innovators from every significant field of endeavor, including politics, business, medicine, law, education, art, religion and entertainment. Today, Who's Who in America remains an essential biographical source for thousands of researchers, journalists, librarians and executive search firms around the world. Marquis now publishes many Who's Who titles, including Who's Who in America , Who's Who in the World , Who's Who in American Law , Who's Who in Medicine and Healthcare , Who's Who in Science and Engineering , and Who's Who in Asia . Marquis publications may be visited at the official Marquis Who's Who website at www.marquiswhoswho.com
News Article | November 21, 2016
TORONTO, ONTARIO--(Marketwired - Nov. 21, 2016) - Richard Young, President and Chief Executive Officer of Teranga Gold Corporation ("Teranga" or the "Company") (TSX:TGZ) (ASX:TGZ) is scheduled to present at the 12th Annual Swiss Mining Institute Conference on Wednesday, November 23, 2016 at 11:40 a.m. CET / 5:40 a.m. ET. The conference will take place in Geneva, Switzerland and is an invitation only event presented by Bally Capital Advisors SA. A webcast of Mr. Young's presentation and slides for simultaneous viewing will be available on Teranga's website at www.terangagold.com/events. During the presentation, Mr. Young will examine Teranga's strong financial performance for the first three quarters in 2016, the strongest in Company history. As well, Mr. Young will discuss Teranga's recent acquisition of Gryphon Minerals and the Company's path to become a multi-jurisdictional West African gold company with a significant pipeline of growth in Senegal, Burkina Faso and Côte d'Ivoire. Teranga is a multi-jurisdictional West African gold company focused on production and development as well as the exploration of more than 5,000km2 of land located on prospective gold belts. Since its initial public offering in 2010, Teranga has produced more than 1.2 million ounces of gold from its operations in Senegal where it is uniquely positioned with the only commercial gold mill in country. Following its recent acquisition of Gryphon, the Company is fast-tracking the development of Banfora, which is expected to commence production in 2019. Concurrent with its production and development activities, exploration programs are underway to increase its reserve base through resource conversion and making major new discoveries. Teranga has a strong balance sheet and the financial flexibility to continue to grow its business. Steadfast in its commitment to set the benchmark for responsible mining, Teranga operates in accordance with the highest international standards and aims to act as a catalyst for sustainable economic, environmental, and community development as it strives to create value for all of its stakeholders. For more information, please go to www.terangagold.com.
Mircevska V.,Institute of Earthquake Engineering and Engineering Seismology IZIIS |
Nastev M.,Geological Survey of Canada |
Hristovski V.,Institute of Earthquake Engineering and Engineering Seismology IZIIS |
Bulajic I.,Mining Institute
Journal of Earthquake Engineering | Year: 2014
The magnitudes of the hydrodynamic pressures at the dam-fluid interface depend on the amount of energy transmitted to the fluid by the vibration of the reservoir boundaries. Although the reservoir topology can have a considerable impact on the amount of generated energy, it has still not been adequately addressed. This article treats an arch dam-fluid interaction considering a compound wave field of compressive and dilatational waves in a reservoir with a complex topology. A truncation surface was located at a distance beyond which the simulated wave field has only negligible effects. © Copyright © IZIIS Institute of Earthquake Engineering.
Berdnikov N.V.,Russian Academy of Sciences |
Nevstruev V.G.,Russian Academy of Sciences |
Saksin B.G.,Mining Institute
Russian Journal of Pacific Geology | Year: 2016
The geochemical features of typical representatives of ferromanganese deposits are studied in the eastern Bureya and Khanka massifs (Russian Far East). Based on the major-, trace-, and rare-earth element distribution, the hydrothermal–sedimentary (with hydrogenic component) nature of their mineralization is established and the geodynamic setting and depth of ore formation are estimated. The differences in the depth and redox conditions of ore formation resulted in the metallogenic zonation of the Khingan block (Bureya Massif), which is expressed in a westward change in ore composition from the magnetite ores of the Kosten’ga–Kimkan zone to the hematite–magnetite and iron–manganese ores of the South Khingan zone. The conclusions about the participation of hydrothermal sources in the formation of ore mineralization of the studied deposits and the specifics of their localization require revision of the strategy of exploration and evaluation of ferromanganese ores in the southern Far East. © 2016, Pleiades Publishing, Ltd.
Khoreshok A.A.,Mining Institute |
Buyankin P.V.,Mining Institute |
Vorobiev A.V.,Yurga Institute of Technology |
Dronov A.A.,Yurga Institute of Technology
IOP Conference Series: Materials Science and Engineering | Year: 2016
The article presents the sequence of computational simulation of stress-strain state of shovel's rotary support. Computation results are analyzed, the kingpin is specified as the most loaded element, maximum stress zones are identified. Kingpin design modification such as enhancement of fillet curvature radius to 25 mm and displacement of eyebolt holes on the diameter of 165 mm are proposed, thus diminishing impact of stress concentrators and improving reliability of the rotary support. © Published under licence by IOP Publishing Ltd.
Balk P.,Berlin |
Dolgal A.,Mining Institute
14th EAGE International Conference on Geoinformatics - Theoretical and Applied Aspects, Geoinformatics 2015 | Year: 2015
The conception of the hidden information about sources of gravitational anomalies as joint fragment of the true model and disturbing objects has been introduced. It is shown, that in the presence of uncertainty inherent to inverse problems, the limit of possibilities of algorithms for constructing the best estimates of model parameters of sources is to maximize the guaranteed volume of hidden information. It is proved that optimal solutions of inverse problems, which realized the known conception of the minimax, have the maximum of the informativity (in this sense). Technologies of building of sufficiently representative subsets of feasible solutions, already tested on another class of inverse problems, have been offered. They have been fixed in the basis of minimax algorithms for solving inverse problems of the ore type. The examples of application of minimax algorithms of the solution of gravity inverse problems are given in the article.
Kazakov B.P.,Mining Institute |
Shalimov A.V.,Mining Institute |
Semin M.A.,Mining Institute
International Journal of Heat and Mass Transfer | Year: 2015
Results of seasonal experimental investigations of natural draft in the potash mines after main fan stoppage are presented and analyzed. Underground mines with equal top elevations are considered. Three modes of natural ventilation depending on the season are determined: flow-through, local and convective ventilation modes. The mathematical model of unsteady heat exchange between mine air, shaft support and rock mass is proposed. This model allows prediction of natural draft intensity for flow-through ventilation mode. Also using system of linear convection equations we formulate natural ventilation stability criterion in case of convective natural ventilation mode for mine shafts after main fan stoppage. Formulated criterion based on Rayleigh number allows prediction of convective ventilation mode formation in shafts. © 2015 Elsevier Ltd. All rights reserved.
Guo L.,University of Cambridge |
Schekoldin R.,Mining Institute |
Scott R.,University of Cambridge
Journal of Petroleum Geology | Year: 2010
The Novaya Zemlya archipelago in Arctic Russia contains an Early Mesozoic fold-and-thrust belt that exposes a predominantly Palaeozoic succession. At a number of localities in northern Novaya Zemlya, Devonian carbonates within this succession contain solid bitumen.The Devonian succession was examined in two areas in northern Novaya Zemlya, one on the Barents Sea coast and one on the Kara Sea coast. On the Barents Sea coast, the Early Devonian succession comprises non-marine and near-shore marine siliciclastics which grade upward into shallow-marine platform carbonates. These facies are succeeded by Middle Devonian deeper-water mid-outer shelf black mudstones and shales. The Late Devonian succession consists of early Frasnian continental conglomerates and sandstones, and middle-Frasnian to Famennian shallow-marine platform carbonates.On the Kara Sea coast, the entire Devonian succession is dominated by shallow-marine carbonates, with deeper-water carbonate turbidites and shales in the late Lochkovian, marine siliciclastics in the Eifelian and non-marine sandstones in the early Frasnian.The Devonian palaeogeography of Novaya Zemlya is characterised by a deepwater slope-basin in the centre and east, and a shallow-marine carbonate platform in the south, west and north. Extensional tectonism influenced deposition of the Devonian succession, particularly during the late Givetian to early Frasnian.Solid bitumen is confined to carbonate facies and is most abundant in Early Devonian strata, occurring mainly within syn-tectonic fractures and associated secondary pore systems. In the mature Timan-Pechora Basin to the south of Novaya Zemlya, Devonian strata are an important element in the petroleum system; however, in the less-explored deep basins of the eastern Barents Shelf to the west of Novaya Zemlya, equivalent Palaeozoic strata are generally deeply buried beneath younger successions. Information from Novaya Zemlya therefore provides an important insight into the likely nature of successions and petroleum systems offshore. © 2010 The Authors. Journal compilation © 2010 Scientific Press Ltd.
News Article | August 22, 2016
The introductory frame from a presentation last year at a meeting of the Rocky Mountain Coal Mining Institute, an industry group representing coal interests in Western states.