[Untitled photo, possibly related to: Eugene Davis, gold prospector, operating "rocker". Rocks and sticks remain in the screened box at the top when water is sluiced over them and the contraption is rocked by the handle. Loose dirt and any mineral content washes below, the dirt gradually washing through and the heavy gold and minerals settling to the bottom and behind the ridges. Pinos Altos, New Mexico] by Russell Lee