Additional annual collective effective dose equivalent for population living in buildings of stone-like coal cinder materials

A rough estimation of the additional annual collective effective dose equivalent was given for population living in buildings made of stone-like coal cinder bricks. The mean equilibrium-equivalent radon concentration was found to be 84 Bq/m3 higher, and absorbed dose rate of gamma radiation 48.0 x 10-8 Gy/h more, than that in control houses. The annual collective effective dose equivalent for population living in buildings of stone-like coal cinder bricks produced during one year was estimated to be 278.87 person-severt (with using a retention factor of 0.8) or 272.63 person-severt (with using a retention factor of 0.65)