Abstract
In India, out of about 0.7 million miners, nearly 0.5 million persons aredirectly engaged in coal operations. Radon and its progeny levels have beenquantified in the coal-mining environment of Godavarikhani, Andhra Pradesh,India using solid-state nuclear track detectors. Seasonal and mine depthvariations in radon levels have been recorded resulting in theidentification of locations with a high radon level as areas with no miningactivity, active mining operational zones and return air ventilation paths.All these radon levels were below the permissible levels. The averageconcentrations of radon and its progeny levels were found to be 144±61 Bq m-3 and 20±11 mWL (working level) respectively in thetwo-incline mine, and these values for the five-incline mine are recordedas 315±71 Bq m-3 and 30±9 mWL respectively.
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