intel hidden guns What do I hv here? Again the subject crossing the metal detector with guns! I thought I wouldn't find nothing I didn't already knew...but crossing platafforms of search..I did find! First the level of the floor, 5 inches, will not trigger the alarm, since the electromagnetic pulse can not be calibrate that acured. Second, and much more important! oxidation of the metal, hidden the print of metal magnetism. So, oxidation, which is an enemy of workable guns, can be in that case, used as any oxide from a metal coumpound, as far, as it has enough humidity to erase the print.