We left the mine by way of one of the original entrances that was buried for 100 years and was dug out. Leaving the mine tunnel felt like departing from a completely different world. The tour certainly gave me a new perspective on what it was like working deep under the earth. We headed to the Warren Museum of Fluorescence, which is housed in the old mill building. It occupies four rooms filled with over 700 fluorescent minerals and other items. It was named after Thomas S. W