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About:
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Radon exists in every U.S. state, as well as about 6% of all American residences have elevated levels. The highest average radon focus in the United States are located in Iowa and in the Appalachian Mountain areas in southeastern Pennsylvania. Several of the greatest analyses have been taped in Mallow, County Cork, Ireland. Iowa has the greatest typical radon focus in the USA as a result of substantial glaciation that ground the granitic rocks from the Canadian Guard as well as deposited it as dirts making up the abundant Iowa farmland.
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