Ken Brower: We several people whom Yost (Jos) guided through the mill agreed afterward that it was extraordinary how much he had learned about the building. I remember thinking that he was either some kind of genius, or an idiosyncratic fascination with the old mine gave him geniuslike qualities.
What Jos did, in researching and interpreting the building, was what we try to do in literature. He had fashioned a great poem to the mill tower, and if there were a Pulitzer or Nobel for mine guiding, he would have won it. (more details from the notebook of Ken Brower with many Jos pics ).
[Photo by Jos. The thin white line is the glacial river bed. On my 2005 trip I learned much of the foreground dirt is actually dust covered ice. Check this. Then zoom way out. -Popster]