Web Extra: Through the Laundry Room Door Then entrance to this former Colorado School of Mines experimental mine is through the laundry room of Holly Bidle’s house in Golden, Colo. Take a video tour. Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to email this to a friend (Opens in new window)Click to print (Opens in new window)