For example if a hat is lined with nickel, silver, EMF paint, etc. , then how do you ensure the hat is grounded? I am a little unsure what grounding means relating to these forms of usage as I have seen EMF protective clothing advertised as grounded.By EMF I mean sufficient for all freq with the exception of possibly Gamma Rays but not a material that produces Gamma Radiation as a result of the interaction either. What types of metals, and or materials would you use? For example nickel, silver, gold, etc? I guess an X Ray hat would be an example of what I mean but other examples of hats/clothing exist capable of blocking a wider array of frequencies. So I know they are made by the military, and privately.