201758&ensp·&enspThe tour is approximately 2 hours. Dress warmly for the underground part of the tour. The AJ Mine/Gastineau Mill tour is Alaska's only authentic underground mine tour. An experienced underground miner is your guide. This tour provides an affordable and enjoyable experience for all ages. Outdoor presentations are made in heated, covered areas.
Feb 11, 2015· Treadwell Mine Historic Trail Walking Tour Alaskaorg. Treadwell Mine Historic Trail Walking Tour twitter , In 1899 the Alaska Treadwell Gold Mining Company erected a 300 stamp mill at this site This is the largest number of stamps ever installed under one roof, anywhere in the world , These piles supported pipes through which waste sand was pumped out into Gastineau Channel