Sep 21, 2009· The radon gas concentrations in the lignite mines were determined to be between 50 ± 7 and 587 ± 16 Bq m 3. The results obtained in these experiments are far under the action levels. The computed radon doses for the mine workers of Tunçbilek, Ömerler and Eynez lignite mines are 1.23, 2.44 and 1.47 mSv y 1, respectively.
Radon dissolved in water was assumed to be a major source of radon decay products in the mines, and radon had been measured in water in the mine in 1915. Comparison of measurements made in 1972 and 1975 with the earlier data from 1915 indicated constant radon concentrations in the groundwater.
The EEC values of radon in Baluchistan mines have been converted to Potential Alpha Energy Concentrations (PAEC) and are also given in Table 2. The average PAEC of radon for the coal mines of Baluchistan, Pakistan is comparable with one of the values for the European Community.
Radon concentrations in coal mines of Baluchistan, Pakistan The Sor Range coal mines cover an area of nearly 80 km 2 and lie within the QuettaKalat Districts of Baluchistan, Pakistan. The study area containing coal mines is ...
The average concentrations of radon and its progeny levels were found to be 144±61 Bq m 3 and 20±11 mWL (working level) respectively in the two incline mine, and these values for the five ...
ber of abandoned mine environments. High radon levels, up to 28589Bqm3, have been measured in parts of one mine. This study demonstrates that industrial archaeologists (such as the Cumbrian Amenity Trust Mining History Society or CATMHS members) and explorers of abandoned mines can be at risk from radon exposure and it proposes a management
The concentrations of radon and consequently the radon doses in the coal mines of Baluchistan are smaller than the action limit of the ICRP 65. Mine workers are therefore relatively safe from the health hazards related to radon and its solid decay products.
Radon concentrations and correspondin g annual doses in various coal mines of Baluchistan, Pakistan (mean values with range in parentheses) The Box Type Dosimeters made up of