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Radiation Protection Dosimetry
Year: 2010  |  Volume: 141  |  Issue: 4  |  Page No.: 432 - 435

Effective dose of miners due to natural radioactivity in a manganese mine in Hungary

N Kavasi, T Vigh, A Sorimachi, T Ishikawa, S Tokonami and M. Hosoda    

Abstract:

In this study, short-term radon (RnDP) and thoron (TnDP) progeny measurements and dose estimation were carried out in winter and summer in a manganese mine, Hungary. Gamma-ray dose rate originating from external sources and 222Rn and 226Ra contents of spring-water from a mine was also measured. During working hours RnDP and TnDP concentration values changed between 12.1–175 and 0.14–0.42 Bq m–3, respectively. The 222Rn and 226Ra concentration values in the karst spring-water were ~6 Bq dm–3 and 16 mBq dm–3, respectively. The radiation dose resulting from the consumption of karst spring-water was negligible. The doses from the inhalation of TnDP and external gamma radiation were of the same magnitude, ~0.1 mSv y–1, which was rather negligible related to the estimated radiation dose of 5 mSv y–1 from RnDP.

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