JIM WEST / SCIENCE PHOTO LIBRARY JIM WEST / SCIENCE PHOTO LIBRARY
National Mining Hall of Fame. Time clock on display at the National Mining Hall of Fame and Museum, Leadville, Colorado, USA. This time clock was built by the Dey Time Register Company. It was used at the Yak Tunnel in Leadville, which was built to keep gold mines from flooding.
Model release not required. Property release not required.