Surface wipe sample returned to background level at 2 hours, indicating radionuclides other than radon progenies. Gama radiation was present penetrating 4 layers of folded aluminum foil at 50%. This monitoring indicates radon progeny radionuclides and another unidentified radiation source other than radon.
Supporting environmental stewardship. For more information about BEST/MATRR go to http://www.matrr.org