The result of a test like that shows something much more threatening than radiation. It shows the presence of nuclear isotopes. If it shows in a difference in geiger counter readings between the filter, and just regular air, that most likely indicates an extreme threat to human health, but one that may take decades to take it's toll.

Don't worry about the levels of the radiation itself killing you, because if it is only ionizing radiation, a human may do alright with magnitudes of higher level (that is how they deceive). But on the other hand, even the smallest trace quantities of radioactive isotopes can be deadly in the long term.

I take measurements of air filters and the environment using a geiger counter here in central Mexico too. Although it is a crude sort of test, I have not noticed any difference yet in the readings.

I don't desire to return to the US to take readings of air filters there, but I have heard quite a few reports of high air-filter readings.

To anyone who understands, that should be an alarm and siren to get the hell out of the region. No point in staying to try to convince others. Pointless really. They will not even realize until ten or twenty years later, and by then it would be far to late. They will blame the cancer on other causes anyhow.

:plutonium: