Well, we spent, between the two of us, setting up the camera, looking at prints, highlighting, sidelighting, every type of lighting that we could conceivably think of, checking back and forth in the darkroom—we could not improve the condition of these latent prints.
So, accordingly, the final conclusion was simply that the latent print on this gun was of no value, the fragments that were there.
After that had been determined, I then proceeded to completely process the entire rifle, to see if there were any other prints of any significance or value—any prints of value—I would not know what the significance would be, but to see if there were any other prints. I completely covered the rifle. I also had a firearms man——
Representative Boggs. What do you cover it with?
Mr. Latona. Gray fingerprint powder.
Representative Boggs. What is that powder?
Mr. Latona. It is usually a combination of chalk and mercury, or possibly white lead and a little bit of resin material to give it some weight.
Mr. Eisenberg. And you testified earlier that that adheres——
Mr. Latona. To the moisture that was left by the finger, the fingers or the hands, when it came in contact with the surface.