Here a tour of the San Francisco mint, Not bad to read and view early days then the 1960's Change to the Granite lady Here the link:smile http://www.coinnews.net/2013/05/03/san-francisco-mint-coin-production-photos/
That was great - thanks for posting. Especially liked the photos of the burnishing process (just never realized what that was exactly) and the internals of the press...
