I remember we had a guy here getting really HIGH radiation readings
I remember a time here when I had to 'heat my heels' (as opposed to cooling them) in our Rad Con office because I had picked up radon daughters from walking through rain puddles. I had set off our radiation detectors. There were several other people sitting in the office with me with our heels pointed towards a space heater. It took about 30-45 minutes to drive off the radioactive material such that i could pass the detectors. We have a high level of trace radioactivity in the ground here.