@article{MTMT:30415355, title = {Smectite appearance in the footwall of the Úrkút manganese ore deposit, Bakony Mts., Hungary}, url = {https://m2.mtmt.hu/api/publication/30415355}, author = {Leskó, Máté Zsigmond and Papp, Richárd Zoltán and Topa, Boglárka Anna and Kristály, Ferenc and Vigh, Tamás and Zajzon, Norbert}, doi = {10.1556/24.62.2019.02}, journal-iso = {CENT EUR GEOL}, journal = {CENTRAL EUROPEAN GEOLOGY}, volume = {62}, unique-id = {30415355}, issn = {1788-2281}, year = {2019}, eissn = {1789-3348}, pages = {100-118}, orcid-numbers = {Topa, Boglárka Anna/0000-0003-1996-2261; Kristály, Ferenc/0000-0002-0075-5994} } @CONFERENCE{MTMT:30677385, title = {Radon and mitigation possibilities and health risk assessment based on the new ICRP recommendations in the manganese mine}, url = {https://m2.mtmt.hu/api/publication/30677385}, author = {Kovács, Tibor and Shahrokhi, Amin and Dafina, Kikaj and Janja, Vaupotic and Csordás, Anita and Vigh, Tamás}, booktitle = {9th International Conference on High Level Environmental Radiation Areas (ICHLERA 2018)}, unique-id = {30677385}, year = {2018}, pages = {64-64}, orcid-numbers = {Kovács, Tibor/0000-0003-2606-0397; Shahrokhi, Amin/0000-0003-1272-4869; Csordás, Anita/0000-0002-7235-5922} } @article{MTMT:3351641, title = {Fossilized biomats as the possible source of high natural radionuclide content at the jurassic úrkút manganese ore deposit, Hungary}, url = {https://m2.mtmt.hu/api/publication/3351641}, author = {Gyollai, Ildikó and Polgári, Márta Piroska and Biró, Lóránt and Vigh, Tamás and Kovács, Tibor and Pál-Molnár, Elemér}, doi = {10.26471/cjees/2018/013/041}, journal-iso = {CARPATH J EARTH ENVIRON SCI}, journal = {CARPATHIAN JOURNAL OF EARTH AND ENVIRONMENTAL SCIENCES}, volume = {13}, unique-id = {3351641}, issn = {1842-4090}, year = {2018}, eissn = {1844-489X}, pages = {477-487}, orcid-numbers = {Gyollai, Ildikó/0000-0001-8576-0196; Biró, Lóránt/0000-0002-1246-8773; Kovács, Tibor/0000-0003-2606-0397; Pál-Molnár, Elemér/0000-0002-9606-0133} } @{MTMT:3332772, title = {Appearance of smectite and its relation to the Úrkút manganese deposit, Bakony Mountains, Transdanubian Range, Hungary}, url = {https://m2.mtmt.hu/api/publication/3332772}, author = {Leskó, Máté Zsigmond and Zajzon, Norbert and Papp, Richárd Zoltán and Kristály, Ferenc and Vigh, Tamás}, booktitle = {SEG2017 Ore deposits of Asia: China and Beyond}, unique-id = {3332772}, year = {2017}, orcid-numbers = {Kristály, Ferenc/0000-0002-0075-5994} } @{MTMT:3332766, title = {Mineralogical Constraints on Paleoenvironmental Changes During Formation of the Eplény Manganese Deposit, Bakony Mountains, Hungary}, url = {https://m2.mtmt.hu/api/publication/3332766}, author = {Papp, Richárd Zoltán and Leskó, Máté Zsigmond and Vigh, Tamás and Zajzon, Norbert}, booktitle = {SEG2017 Ore deposits of Asia: China and Beyond}, unique-id = {3332766}, year = {2017} } @book{MTMT:3293262, title = {Mangánércbányászat Úrkúton (1917-2017) [Manganese Ore Mining at Úrkút (1917-2017)]}, url = {https://m2.mtmt.hu/api/publication/3293262}, isbn = {9789633065471}, author = {Polgári, Márta Piroska and Szabó, Zoltán and Vigh, Tamás}, publisher = {SZTE TTIK Földrajzi és Földtudományi Intézet}, unique-id = {3293262}, year = {2017}, orcid-numbers = {Pál-Molnár, Elemér/0000-0002-9606-0133} } @{MTMT:3233694, title = {In situ radon measurements in a Manganese Ore Mine}, url = {https://m2.mtmt.hu/api/publication/3233694}, author = {Shahrokhi, Amin and Vigh, Tamás and Németh, Csaba and Csordás, Anita and Kovács, Tibor}, booktitle = {7th International Symposium on IN SItu NUclear MEtrology as a tool for redioecology - INSINUME 2017}, unique-id = {3233694}, year = {2017}, pages = {93}, orcid-numbers = {Shahrokhi, Amin/0000-0003-1272-4869; Németh, Csaba/0000-0001-5055-5571; Csordás, Anita/0000-0002-7235-5922; Kovács, Tibor/0000-0003-2606-0397} } @CONFERENCE{MTMT:3233675, title = {The origin of the radon at the manganese-mine - ten years of radon measurements in the mine waters}, url = {https://m2.mtmt.hu/api/publication/3233675}, author = {Csordás, Anita and Somlai, János and Vigh, Tamás and Kovács, Tibor}, booktitle = {III. East European Radon Symposium (TEERAS)}, unique-id = {3233675}, year = {2017}, pages = {44-45}, orcid-numbers = {Csordás, Anita/0000-0002-7235-5922; Somlai, János/0000-0002-5026-7948; Kovács, Tibor/0000-0003-2606-0397} } @article{MTMT:3219133, title = {Radon exhalation study of manganese clay residue and usability in brick production}, url = {https://m2.mtmt.hu/api/publication/3219133}, author = {Kovács, Tibor and Shahrokhi, Amin and Sas, Z and Vigh, Tamás and Somlai, János}, doi = {10.1016/j.jenvrad.2016.07.014}, journal-iso = {J ENVIRON RADIOACTIV}, journal = {JOURNAL OF ENVIRONMENTAL RADIOACTIVITY}, volume = {168}, unique-id = {3219133}, issn = {0265-931X}, abstract = {The reuse of by-products and residue streams is an important topic due to environmental and financial aspects. Manganese clay is a residue of manganese ore processing and is generated in huge amounts. This residue may contain some radionuclides with elevated concentrations. In this study, the radon emanation features and the massic exhalation rate of the heat-treated manganese clay were determined with regard to brick production. From the manganese mud depository, 20 samples were collected and after homogenization radon exhalation characteristics were determined as a function of firing temperatures from 100 to 750 °C. The major naturally occurring radionuclides 40K, 226Ra and 232Th concentrations were 607 ± 34, 52 ± 6 and 40 ± 5 Bq kg−1, respectively, comparable with normal clay samples. Similar to our previous studies a strong correlation was found between the internal structure and the radon emanation. The radon emanation coefficient decreased by ∼96% from 0.23 at 100 °C to 0.01 at 750 °C. The massic radon exhalation rate of samples fired at 750 °C reduced by 3% compared to samples fired at 100 °C. In light of the results, reusing of manganese clay as a brick additive is possible without any constraints. © 2016 Elsevier Ltd}, keywords = {TEMPERATURE; ELEVATED CONCENTRATIONS; Chemistry; Manganese; CLAY; Radioisotopes; HEAT-TREATMENT; radon; ORES; heat treatment; Exhalation; analysis; radiation monitoring; air pollutant; aluminum silicate; Strong correlation; building material; Air Pollutants, Radioactive; Building materials; aluminum silicates; Emanation; Construction Materials; Firing temperature; Brick; radiation hazard; Radiation hazards; Radon exhalation rate; NATURALLY-OCCURRING RADIONUCLIDES; Radon emanation coefficients; Manganese clay}, year = {2017}, eissn = {1879-1700}, pages = {15-20}, orcid-numbers = {Kovács, Tibor/0000-0003-2606-0397; Shahrokhi, Amin/0000-0003-1272-4869; Somlai, János/0000-0002-5026-7948} } @article{MTMT:3219132, title = {Radon measurements and dose estimate of workers in a manganese ore mine}, url = {https://m2.mtmt.hu/api/publication/3219132}, author = {Shahrokhi, Amin and Vigh, Tamás and Németh, Csaba and Csordás, Anita and Kovács, Tibor}, doi = {10.1016/j.apradiso.2017.02.047}, journal-iso = {APPL RADIAT ISOTOPES}, journal = {APPLIED RADIATION AND ISOTOPES}, volume = {124}, unique-id = {3219132}, issn = {0969-8043}, abstract = {In the new European Basic Safety Standard (EU-BSS), a new reference level for indoor radon concentration in workplaces has recommended that the annual average activity concentration of indoor radon shall not be higher than 300 Bq m−3. This paper describes the radon concentration level in an underground workplace (manganese ore mine) over long time intervals (4 years). Several common radon monitors devices – including NRPB and Raduet (as a passive method based on CR-39), AlphaGUARD PQ 2000Pro, SARAD EQF3220, TESLA and Pylon WLX (as active methods) – were used for continuous radon measurements. The output results were used, first, to comprised the result of each device, based on conditions present in underground mines; Second, to have comprehensive measurements about all factors that cause workers exposure to radiation (each monitoring device specified for a unique measurement). The results indicate that the mine's staff had successful efforts to reach the strict requirement of the new EU-BSS, and the average annual radon activity concentrations during the working hours were below 300 Bq m−3 in the investigated period. The paper presents the effective dose calculations; applying different equilibrium factors suggested by the literature and calculated basing on our measurements at the site, concluding that the differences could be about threefold. © 2017 Elsevier Ltd}, keywords = {Manganese; radon; ORES; Activity concentration; Radon progeny; effective dose; Radon concentrations; Indoor radon concentrations; Manganese mines; Manganese mine; Radon detectors; Radon activity concentration; Comprehensive measurement; Passive radon detectors; EU-BSS; Active radon detector}, year = {2017}, eissn = {1872-9800}, pages = {32-37}, orcid-numbers = {Shahrokhi, Amin/0000-0003-1272-4869; Németh, Csaba/0000-0001-5055-5571; Csordás, Anita/0000-0002-7235-5922; Kovács, Tibor/0000-0003-2606-0397} }