Hortland-
I only answered the questions I could offer explanations to with a rudimentary knowledge of science.
I do not have the photo in front of me to examine it.
As for the problem radiation, that's a question for a scientist, not me.
I do know a good portion of the LEM was made of a metallic substance, about as think as 3 sheets of aluminum foil.
We actually have a real LEM at the Cradle of Aviation museum where I volunteer. It was slated to go up, but the program was cancelled.
Either way, it was built by Grumman, and I believe it is the only real LEM on earth. (The rest, well, you know where they are).
We've got rolls of that foil laying around the museum. Pretty amazing stuff.