I'm not sure if this is the mill you talk about, but I know there are drawings for this one online, in great size for printouts or whatever.
"Standard Gold Mill, East of Bodie Creek, Northeast of Bodie, Bodie, Mono County, CA"
A link I have is this one
http://memory.loc.gov/ammem/collections ... index.html
and then search for "Bodie Mill" or the name given above.
Sorry can't give direct links as they changes any time I've been in there looking.
Other then that, I read this forum once in a while, but anytime I see this thread has new posts I get all excited as from your posting, I make this images in my head and think over what you write and just add in from that one.
Imagination is a good friend of mine you see. LOL
Actually, I enjoy seeing the spirit and the work going into this - I've long lost my own, and still looking for it - glad to see others being able to hold on to their own, thank you for sharing the words of progress.
Best wishes for the new year to come, may 2010 be a wonderful year for all of us!