One could say that the Spanish Radon Program began in 1988 with the development of a nationalsurvey on indoor radon in Spanish houses. Today, 10 years later, many activitites by differentinstitutions and Universities have been carried out and a good information about the radon problemhas been achieved. Spain consists of 50 provinces which are amalgamated to form 17 autonomousregions. In this paper, we show the results of a major research and development program which is stillin progress.
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