Browsing by Author "Ellefmo, Steinar Løve"
Now showing items 1-20 of 38
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Analysis of Deformation and Stress Distribution around Stopes in Mining using a Combination of Geostatistics and Numerical Analysis
Refsli, Christian Dyhr (Master thesis, 2013)In the mining industry there are several methods to predict how the rock mass will behave. One of those methods is numerical analysis with modeling software, e.g. Finite Element Method (FEM). These numerical methods require ... -
A probabilistic approach to the value chain of underground iron ore mining: From deposit to product
Ellefmo, Steinar Løve (Doktoravhandlinger ved NTNU, 1503-8181; 2005:65, Doctoral thesis, 2005)Mining activities will eventually deplete any deposit. In a sustainability perspective, the deposit should therefore be utilised optimally during production. A prerequisite to achieve this is the deliberate and consistent ... -
Assessment of undergorund mining of Nussir copper deposit: With special emphasize on cut-off and mining method
Sletten, Audun Mortveit (Master thesis, 2012)The narrow steeply dipping strata bound sediment hosted copper deposit, Nussir, located in Kvalsund community, Finmark, Norway, have been subject to an assessment of underground mining. Resources classified as Indicated, ... -
Assessment of underground alternatives at Engebø rutile deposit using the Mineable Shape Optimizer
Isaksen, Sondre (Master thesis, 2017)Computer software is nowadays commonly being utilised for mine planning purposes, MSO is such a software and is used to find the optimal stope shapes and dimensions for a given block model, representing an orebody, in terms ... -
Assessment of Undiscovered Mineral Resource Potential at the Northern Mid-Atlantic Ridge (MAR) and on the Norwegian Mainland: Method development and applications
Juliani, Cyril Jérôme (Doctoral theses at NTNU;2019:137, Doctoral thesis, 2019)Marine mineral resources, such as seafloor massive sulfides (SMS), may address future needs in raw materials for nations aiming to sustain industrial and economic development. Past exploration of these seabed resources, ... -
Dagbruddsalternativer i en industrimineralforekomst
Hilmarsen, Tor Helge (Master thesis, 2013)I denne oppgaven er det gjort et forsøk på å optimalisere utvidelsen av marmorbruddet til Brønnøy Kalk AS og dele det inn i pushbacker. Dataverktøyet NPV Scheduler er brukt for å generere optimaliserte bruddalternativer ... -
Dagbruddsdesign med diskontering av kontantstrøm
Hjelle, Eirik (Master thesis, 2016)«Dagbruddsdesign med diskontering av kontantstrøm» er en masteroppgave skrevet at Eirik Hjelle. Oppgaven er utført ved Institutt for geologi og bergteknikk (IGB) ved Norges teknisk-naturvitenskapelige universitet (NTNU). Rana ... -
Design parameters for the Engebø open pit: With focus on slope stability
Ommedal, Arnstein (Master thesis, 2013)The objective of this thesis was to examine the geotechnical conditions at the Engebøfjell in Naustdal Municipality, Sogn og Fjordane, Norway with regard to a proposed open pit mine there. Another aim was to develop design ... -
Economic block model development for mining seafloor massive sulfides
Lesage, Maxime; Juliani, Cyril Jerome; Ellefmo, Steinar Løve (Journal article; Peer reviewed, 2018)To support open-pit studies related to seafloor massive sulfides mining projects, an economic block-model is required. A modular framework is proposed to produce economic block models accommodating various levels of data. ... -
Exploration of Sediment Hosted Massive Sulfide (SHMS) deposits in the Barents Sea
(Master thesis, 2019)Barentshavets geologi hjemmer flere hydrokarbonreservoarer, som gjør den til en økonomisk viktig del av norsk sokkel, og er tidligere blitt grundig undersøkt på grunn av dette. I denne oppgaven blir regionen utforsket med ... -
Feasibility of Deep-Sea Mining Operation Within Norwegian Jurisdiction
Frimanslund, Erik Kristian Thon (Master thesis, 2016)Numerous hydrothermal vent sites are discovered along the Arctic Mid-Ocean Ridge (AMOR), stretching some 1,050 km from Jan Mayen to Svalbard, mostly within Norway s economically exclusive zone (EEZ). Associated with these ... -
First hyperspectral imaging survey of the deep seafloor: High-resolution mapping of manganese nodules
Dumke, Ines; Nornes, Stein Melvær; Purser, Autun; Marcon, Yann; Ludvigsen, Martin; Ellefmo, Steinar Løve; Johnsen, Geir; Søreide, Fredrik (Journal article; Peer reviewed, 2018)Hyperspectral seafloor surveys using airborne or spaceborne sensors are generally limited to shallow coastal areas, due to the requirement for target illumination by sunlight. Deeper marine environments devoid of sunlight ... -
Forslag til adkomstløsning for fremtidig brytning av forekomstene Rupsi, Giken og Charlotta i Sulitjelma - Med forslag til løsning for oppboring av Rupsi-forekomsten
Ramlo, Elisabeth (Master thesis, 2015)Nye Sulitjelma Gruver AS planlegger ny drift i Nordgruvefeltet i Sulitjelma, nærmere bestemt på den hittil uberørte Rupsi-forekomsten, på bunnen av Nedre Charlotta gruve og på forlengelsen av Giken-forekomsten. Til dette ... -
Geologisk utvikling og 3D modellering av randsonen i Svea Nord forekomsten: Med fokus på mellomstein, overliggende bentonittlag og konsekvens for brytningen
Velve, Håvard (Master thesis, 2013)Denne hovedoppgaven er skrevet i samarbeid med Store Norske Spitsbergen Grubekompani (SNSG) som et bidrag i kartleggingen av randsonen til Svea Nord kullgruva 50 km sørøst for Longyearbyen på Svalbard. Gjennom geologiske ... -
Geometallurgical Approach to the Element-to-Mineral Conversion for the Nabbaren Nepheline Syenite Deposit
Mena Silva, Camilo Andrés; Sørensen, Bjørn Eske; Aasly, Kurt; Ellefmo, Steinar Løve (Journal article; Peer reviewed, 2018)Nabbaren nepheline syenite, a silica-deficient intrusive rock with low Fe content, was the industrial mineral deposit study case in this study. The quality of industrial mineral products are generally based on their bulk ... -
Geometallurgical Flowsheet as a Tool for Designing and Communicating Geometallurgical Programs
Lang, Aleksandra Maria; Ellefmo, Steinar Løve; Aasly, Kurt (Journal article; Peer reviewed, 2018)This paper introduces the concept of using a geometallurgical flowsheet as a tool to design, visualize and communicate a geometallurgical program. The development of the concept is carried out using a case study of an ... -
Geometric and Qualimetric Modelling of the Hessjø deposit
Nørsett, Silje Marie (Master thesis, 2016)The main goal of this master thesis is to develop geometric and qualimetric 3D-models the Hessjø deposit, located in Holtålen, Norway, using data acquired in the 1970s. This includes a thorough evaluation of the data in ... -
Ladningsberegning basert på frekvensveide vibrasjonskrav
Gjengedal, Sondre (Master thesis, 2013)Den Norske Standarden, NS8141-01:2012 Vibrasjoner og støt ? Veiledende grenseverdier for bygge- og anleggsvirksomheten, bergverk og trafikk, har nylig gjennomgått en større revisjon hvor de veiledende grenseverdiene for ... -
Large-Scale Underground Mining in Tromsdalen: With focus on dimensioning and design of stopes and pillars
Pedersen, Anja Hammernes (Master thesis, 2014)The objective of this thesis is to estimate the stope dimensions for a future underground mine in Tromsdalen, Verdal. Additionally, the most favourable orientation of the stopes and possible stope layouts will be assessed. ... -
MarMine cruise report - Arctic Mid-Ocean Ridge 15.08.2016 - 05.09.2016
Ludvigsen, Martin; Aasly, Kurt; Ellefmo, Steinar Løve; Hilário, Ana; Ramirez-Llodra, Eva; Søreide, Fredrik Xander; Falcon-Suarez, Ismael; Juliani, Cyril Jerome; Kieswetter, Amanda; Lim, Anna; Christian, Malmquist; Nornes, Stein Melvær; Reimers, Hauke; Paulsen, Emil; Sture, Øystein (NTNU Cruise reports;2016-1, Research report, 2016)