Been to Juneau many times - first I have heard about the Treadwell mine. My one and only is a visit to National Historic Landmark Kennecott Mine last year. Built into the side of mountain is 13 stories of copper rock crushing ingenuity. Floor after floor of machinery. Each floor housing a different extraction process. Glacier hiking, 1/2 hour fly in & out, fantastic viewing, overnight stay w/3 great meals & a one on one tour guide- think Im hooked. Even went into McCarthy town had a few at the local tavern. Did a little dancing to live band with friendly folk. Next Alaskan historic discovery trip will be Treadwell. Many thanks to Katie & ADN!