Blar i NTNU Open på forfatter "Ellefmo, Steinar Løve"
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Mineral characterization as a tool in the implementation of geometallurgy into industrial mineral mining
Lang, Aleksandra; Aasly, Kurt; Ellefmo, Steinar Løve (Journal article; Peer reviewed, 2018)Industrial minerals play an important role in the Norwegian mining industry. The presented research focuses on defining marble deposit variability in order to evaluate parameters that can potentially be related to downstream ... -
Mineralogical and textural characterization for increased iron oxide recovery. Exemplified on the Storforshei iron formation
Tøgersen, Marte Kristine (Doctoral theses at NTNU;2019:309, Doctoral thesis, 2019)Process mineralogy is increasingly becoming an important part of quality control in mining operations, and chemical assays are not sufficient for predicting metallurgical performance of complex ore deposits. Knowledge of ... -
Mineralogy and texture of the Storforshei iron formation, and their effect on grindability
Tøgersen, Marte Kristine; Kleiv, Rolf Arne; Ellefmo, Steinar Løve; Aasly, Kurt (Journal article; Peer reviewed, 2018)Investigating how ore mineralogy and texture affect the recovery from the processing plant is important for any mining operation. The results will assist in production planning and optimising the utilisation of a deposit. ... -
Mining Ground Deformation Estimation Based on Pre-Processed InSAR Open Data—A Norwegian Case Study
Blachowski, Jan; Ellefmo, Steinar Løve (Journal article; Peer reviewed, 2023)Sublevel caving mining causes surface deformation in three distinct zones parallel to the extracted deposit. Most of the published research is focused on the extent of the caved and fracture zones. The extent of the largest, ... -
Multi-scale Quantitative Risk Analysis of Seabed Minerals: Principles and Application to Seafloor Massive Sulfide Prospects
Juliani, Cyril Jerome; Ellefmo, Steinar Løve (Journal article; Peer reviewed, 2018)The potential for mining hydrothermal mineral deposits on the seafloor, such as seafloor massive sulfides, has become technically possible, and some companies (currently not many) are considering their exploration and ... -
Om dagbruddsveggen ved Elkem Tana
Martinelli, Erik (Master thesis, 2014)Elkem Tana AS produserer i overkant av 1 million tonn kvartsitt fra dagbruddet i Austertana, og er dermed Norges største kvartsittprodusent. I forbindelse med den planlagte utvidelsen av bruddet har det vært nødvendig med ... -
Probabilistic estimates of permissive areas for undiscovered seafloor massive sulfide deposits on an Arctic Mid-Ocean Ridge
Juliani, Cyril Jerome; Ellefmo, Steinar Løve (Journal article; Peer reviewed, 2018)Norway explores its seabed mining potential including exploration studies on seafloor massive sulfides (SMS) at the outermost parts of its continental shelf, the Mohn’s Ridge. Owing to the significant development potential ... -
Prosessbeskrivelse av et pukkverk - en kostnads- og optimaliseringsstudie
Nesheim, Helene Fromreide (Master thesis, 2018)Hva koster det egentlig å produsere et tonn pukk? Dette er viktig informasjon for en pukkprodusent. Ved hjelp av NTNUs kostnadsmodell er selve knusekostnaden for Franzefoss pukkverk i Vassfjell beregnet. For en tretrinnsknust ... -
Prosessbeskrivelse av et pukkverk - en kostnads- og optimaliseringsstudie
Nesheim, Helene Fromreide (Master thesis, 2018)Hva koster det egentlig å produsere et tonn pukk? Dette er viktig informasjon for en pukkprodusent. Ved hjelp av NTNUs kostnadsmodell er selve knusekostnaden for Franzefoss pukkverk i Vassfjell beregnet. For en tretrinnsknust ... -
Prospectivity Mapping of Mineral Deposits in Northern Norway Using Radial Basis Function Neural Networks
Juliani, Cyril Jerome; Ellefmo, Steinar Løve (Journal article; Peer reviewed, 2019)In this paper, the radial basis function neural network (RBFNN) is used to generate a prospectivity map for undiscovered copper-rich (Cu) deposits in the Finnmark region, northern Norway. To generate the input data for ... -
Resource and Reserve Classification of a Solwara 1 type Deposit at an Arctic Mid Ocean Ridge
Dombrowsky, Jonas Michael (Master thesis, 2018)As land based deposits become depleted, deep sea deposits with a high concentration of eco-nomic elements become a new focus for exploitation. Comparing deep sea mining activities with their land based counterparts can ... -
Resource Assessment of Undiscovered Seafloor Massive Sulfide Deposits on an Arctic Mid-Ocean Ridge: Application of grade and tonnage models
Juliani, Cyril Jerome; Ellefmo, Steinar Løve (Journal article; Peer reviewed, 2018)Norway has started ongoing initiatives related to deep sea mining. These include the evaluation of mineral resources within its sovereign territorial waters on the deep ocean floor of the Arctic region, i.e. the Mohns Ridge ... -
Rock Classification Using Multivariate Analysis of Measurement While Drilling Data: Towards a Better Sampling Strategy
Sajith Vezhapparambu, Veena; Eidsvik, Jo; Ellefmo, Steinar Løve (Journal article; Peer reviewed, 2018)Measurement while drilling (MWD) data are gathered during drilling operations and can provide information about the strength of the rock penetrated by the boreholes. In this paper MWD data from a marble open-pit operation ... -
Romlig mineralogisk og geofysisk karakterisering av Nabberen nefelinsyenittforekomst - Med utgangspunkt i definerte geokjemiske domener og med fokus på forekomsten av magnetitt
Lorentzen, Andreas P (Master thesis, 2016)Sommeren 2015 ble det gjort undersøkelser i gruven til Sibelco Nordic AS. Nabbaren Nefelinsyenitt, som blir undersøkt i oppgaven, er lokalisert på sør-siden av Stjernøya, nord-vest for Alta. Bedriften har delt forekomsten ... -
Spatial reservoir characterisation with focus on distribution of porosity and permeability properties: - A study of the Tarbert and Ness Formations at the Gullfaks Field
Sagen, Ina Cathrine (Master thesis, 2016)This thesis aims to characterise the spatial petrophysical distribution of porosity and permeability properties in the Tarbert and Ness Formation at the Gullfaks Field. The geomodelling software Leapfrog Geo was used to ... -
Statistical Analysis of MWD Aata in a Geometallurgical Perspective: A case study on an industrial mineral deposit
Vezhapparambu, Veena Sajith (Doctoral theses at NTNU;2019:191, Doctoral thesis, 2019) -
Strategisk dagbruddsplanlegging av en industrimineralforekomst
Hole, Erlend Blindheim (Master thesis, 2022)Målet med denne oppgaven er å lage en 50-årig langsiktig dagbruddsplan i en industrimineralforekomst i Tromsdalen. Dagbruddsplanen lages ved å bruke direkte blokkplanlegging med programmet Miningmath. Gruveplanen må forholde ... -
Testing og evaluering av EVA-baserte sprøytbare membraner for permanent vanntett tunnelkledning med sprøytebetong for veg- og jernbanetunneler
Langås, Christine (Master thesis, 2014)Det har oppstått et stort behov for å modernisere norske tunneler. Blant annet etterlyses det vann- og frostsikringsløsninger som skal ivareta moderne funksjonskrav. Masteroppgaven tar for seg permanent vanntett tunnelkledning ... -
The Morphology of the Mohn's Ridge - with Special Focus on Listric and Detachment Faults and their Link to the Formation of Seafloor-massive Sulfides
Reimers, Hauke (Master thesis, 2017)Slow and ultraslow-spreading mid-ocean ridges are linked to limited magma supply, discontinuous axial volcanic ridges, asymmetric flank development and formation of oceanic core complexes where lower crustal and upper ... -
Use of Underwater Hyperspectral Imagery for geological characterization of the seabed
Aarrestad, Sigrun Melve (Master thesis, 2014)This master s thesis presents an optical mapping method, Hyperspectral Imaging (HI) and its application to marine geological mapping - Underwater Hyperspectral Imaging (UHI). UHI uses similar technology as terrestrial HI ...