High radon concentrations can be found in soils and rocks containing uranium, granite, shale, phosphate, and pitchblende. Because radon is a gas, it can move through soil and into the atmosphere or a home. In outdoor air, radon is diluted to relatively harmless low concentrations. However, once trapped inside an enclosed space, radon can accumulate. Indoor radon levels depend upon the concentration of radon in the soil, the number of available paths into the building, and the strength of forces drawing radon into the building.
Levels can vary greatly in the same town, on the same street, and from house to house.
For more information The Nebraska Department of HHS Regulation and Licensure radon program can provide you with a list of companies offering radon measurement or mitigation services in Nebraska. Pamphlets, brochures, and other materials on radon are also available.