This was hard to get, and hard to take conclusions; these are both IED's x ray image; what happens is that they on the dark enviroment of the x ray box, the contrast the objects with white; white is the base of all colours, and as curiosity, on the midle of my investigations, I discouvered that we humans see the vegetation as green because of the light, or else we would see red :) Now the only way to cross this barrier of detection, is exacly the same as with dope, flourescent colours, is like a mirror to the x ray, it reflects back the contrasts