ABSTRACT
The US environmental protection agency considers indoor radon to be one of the most important causes of cancer in the US Radon is the single largest source of human exposure to ionizing radiation. Doses from medical applications of radiation and from radon have particularly wide ranges. Radiation monitors were placed in the house to measure indoor radon levels and to alert the Stanley Watras family of any increases in radon concentrations. Radon gas is a product of the radioactive decay of naturally occurring uranium in the Earth’s crust. Lung cancer results from exposure of sensitive broncho-epithelial cells in the lung to alpha radiation from radon and its radioactive progeny. The international commission on radiological protection and the United Nations scientific committee on the effects of atomic radiation provide guidance in developing radiation protection policies and standards. The organization of a radiological protection program depends on several important political, social, and economic considerations.
