en Radiation Biology Radiation Biology گزارش کوتاه Short Report <p dir="ltr" style="text-align: justify;"><strong>Background:</strong> In this study are submitted the radon concentration measurement results of four underground mines: Stanterg, Artana, Hajvali and Badovc, which are owned by Trep&ccedil;a Enterprise, Kosovo. The mines have the same geological formation and from these mines are extracted ores rich with lead, zinc, silver, and gold. The radiation exposures caused by radon and radon daughters was determined and gamma dose measurements were also performed in the same time. <strong>Materials and Methods:</strong> The measurement of radon concentrations in the environment of mines is carried out by CRM 510, a portable device which continuously made measurement for four consecutive days. The gamma exposure was determined using fully portable handheld instrument GR-130 Exploranium. The detector consisted of a 65 cm³ sodium iodide NaI(Tl) and a GM tube. The system was calibrated against a ¹³⁷Cs standard and checked for stability using a low-activity 9 kBq radioactive source. <strong>Results: </strong>The radon gas concentration for underground mines under study varied from minimal values 60 Bqm-3 to maximal recorded value 748 Bqm^-3. The average radon concentration for mines Stanterg, Artana, Hajvali and Badovc are 301.6, 191.4, 463.2 and 527.2 Bqm^-3, respectively. <strong>Conclusion:</strong> The average of total annual effective doses from radon concentration and radon decay products for miners under the study is 2.67 mSv and just from gamma ray exposure is 0.26 mSv. The average values for radon concentration and radon decay products to mines under the study are lower than action level 1000 Bq m^-3 given by IAEA.</p> <p></p> Radon concentration, underground mines, effective dose, workplace, ore 369 372 http://ijrr.com/browse.php?a_code=A-10-1-585&slc_lang=en&sid=1 G. Hodolli 790031947532846007661 790031947532846007661 No Institute of Occupational Medicine, Radiation Protection Service Sadik Bekteshi sadbeki@yahoo.com 790031947532846007662 790031947532846007662 Yes University of Prishtina S. Kadiri 790031947532846007663 790031947532846007663 No Institute of Occupational Medicine B. Xhafa 790031947532846007664 790031947532846007664 No University of Prishtina K. Dollani 790031947532846007665 790031947532846007665 No University of Tirana, Faculty of Natural Science