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1. Radon is the daughter of radium.

2. Equally high domestic lifetime radon exposures are rarely found.

3. Why is radon in homes the problem?

4. Would firms move into areas with high radon concentrations?

5. But who do we blame for radon?

6. Can data on radon exposure and cancer risks in uranium miners be applied to the general population?

7. Radon, a naturally-occurring radioactive gas, is formed in the earth from the decay of minute amounts of uranium.

8. Radon is a colourless, odourless and tasteless gas found in group O of the Periodic Table.

9. If the soil is permeable enough radon can diffuse out before it decays.

10. In recent years, radon has been recognised as the main source of human exposure to ionising radiation.

11. One area of recent debate concerns radon gas and its links to lung cancer.

12. As for radon,[Sentence dictionary] Rudy said looking for radon in drinking water would be extremely expensive and might not help public health.

13. Suspended floors to allow air flow and prevent radon build-up.

14. Several small contracts to provide radon potential maps have been completed.

15. Radon gas can be detected using an easily obtainable device.

16. Environmentalists keep quiet because concern over radon in houses would divert attention from the campaign against nuclear power.

17. Radon has been used to detect uranium mineralisation and also to locate faults which may control mineral deposition.

18. Radon exposure is the hottest issue among radiation scientists today - but it remains almost entirely unknown to the public.

19. Radon comes from the uranium that occurs naturally in the ground.

20. But in two dimensions, Radon transform is not local.

21. A radon progeny continuous monitor was developed.

22. Radon is a kind of inert gas.

23. There is an acknowledged risk of lung cancer from radon.

24. In recent years, concern has been raised over exposure to ionizing radiation from radon gas.

25. The South West has some of the highest levels of household radon in the country.

26. They are the noble gases: neon, argon, krypton, xenon, and radon.

27. Recent research seems to indicate a positive correlation between the incidence of acute myeloid leukaemia and indoor radon concentrations.

28. The applicability of such data derived from uranium miners to the general population is central to the radon issue.

29. Public awareness of the hazard caused by the accumulation of elevated levels of radon in buildings continues to grow.

30. This is the so-called Action Level beyond which the occupier is advised to reduce the radon level.