Representative Boggs. Is that when the cast is on?
Mr. Cunningham. That is definitely after it is removed.
Representative Ford. You actually make a cast of the individual's hand?
Mr. Cunningham. Oh, yes.
Representative Boggs. You make the casts. Then you take the casts off.
Mr. Cunningham. You slit it.
Mr. Eisenberg. Can you describe how the cast is made?
Mr. Cunningham. Yes. You first take warm paraffin. Each paraffin melts at a slightly different temperature. What we were using in our tests melts at about 130°. And this hot paraffin is placed on the hands. It is spread on with a brush, or it can be poured over. If you are sure that your brush is absolutely clean and will not react—and we checked all of our equipment so that we were not getting a reaction from the diphenylbenzidine—we let it pour on from the brush. Once you get a coating, you can just brush it on, because then you won't be disturbing any materials on the hands. And after you get a coat on, you take gauze bandages and lay them on top and put more paraffin on them. The gauze does nothing more than to give it reinforcement so it won't fall apart or crumble when it gets real cool. Then you cut them off the hands after they cool. Then they are chemically processed with either diphenylamine or diphenylbenzidine.
Representative Boggs. The cast?
Mr. Cunningham. Yes; the portion of the cast next to the hand.