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2. Radium and radon in the environment - Wikipedia

   en.wikipedia.org/wiki/Radium_and_radon_in_the...

   In a working mine, the radon level can be controlled by ventilation, sealing off old workings and controlling the water in the mine. The level in a mine can go up when a mine is abandoned; it can reach a level which can cause the skin to become red (a mild radiation burn). The radon levels in some of the mines can reach 400 to 700 kBq m −3. [17]

3. Radon - Wikipedia

   en.wikipedia.org/wiki/Radon

   Radon levels fluctuate naturally, due to factors like transient weather conditions, so an initial test might not be an accurate assessment of a home's average radon level. Radon levels are at a maximum during the coolest part of the day when pressure differentials are greatest. [77]

4. Health effects of radon - Wikipedia

   en.wikipedia.org/wiki/Health_effects_of_radon

   The largest natural contributor to public radiation dose is radon, a naturally occurring, radioactive gas found in soil and rock, [65] which comprises approximately 55% of the annual background dose. Radon gas levels vary by locality and the composition of the underlying soil and rocks.

5. What is radon? The radioactive gas is found in homes across ...

   www.aol.com/news/radon-radioactive-gas-found...

   Radon, a byproduct of naturally decaying uranium, is estimated to cause thousands of deaths each year nationwide. Here's how to protect yourself. Radon, a byproduct of naturally decaying uranium ...

6. Radon levels in Old Courthouse trigger a plan, but details ...

   www.aol.com/radon-levels-old-courthouse-trigger...

   According to the World Health Organization, radon is a naturally-occurring radioactive gas with no smell, color or taste. Radon escapes from the ground into the air, where it produces further ...

7. Background radiation - Wikipedia

   en.wikipedia.org/wiki/Background_radiation

   Radon seeps out of these ores into the atmosphere or into ground water or infiltrates into buildings. It can be inhaled into the lungs, along with its decay products, where they will reside for a period of time after exposure. Although radon is naturally occurring, exposure can be enhanced or diminished by human activity, notably house ...