- Health Effects of Radon - Center For Environmental Research & Technology, Inc. consumer information guide about the effects of radon.
- Infiltec Blower Door and Radon Mitigation Catalog - Manufactures tools for building airtight houses, and distributes radon mitigation products.
- National Safety Products, Inc. - Provides low-cost Radon Test Kits and important information regarding your health.
- Radiation and Health Physics - Radiation information, Protection, Effects
- Radiation Protection - Radon section of the U.S. EPA guide for radiation protection.
- Radon Center - Information about radon and a list of quality radon contractors throughout the US.
- Radon Environmental Effects - LiveStrong guide about radon. Radon is a radioactive gas that has no color, odor or taste. It occurs naturally in small concentrations in all soils, and in higher concentrations in granite, shale and phosphates. From the soil, radon can sink into ground water systems or rise into the atmosphere. Its greatest impact occurs when it becomes trapped and breaks down inside of buildings.
- Radon Testing and Consultants - Building Inspection, radon and carbon monoxide testing and evaluation.
- The Radon Expert - A directory to help find local radon mitigation contractors.