xmlns:atom="http://www.w3.org/2005/Atom"
This Directive shall not apply to:
exposure to the natural level of radiation, such as radionuclides contained in the human body and cosmic radiation prevailing at ground level;
exposure of members of the public or workers other than air or spacecrew to cosmic radiation in flight or in space;
aboveground exposure to radionuclides present in the undisturbed earth's crust.