From the Nye County, Nevada Photograph Collection (PH-00221) -- Series VII. Other areas in Nye County -- Subseries VII.I. Wilson Family (Toiyabe Mountains, Nevada). The wheel and other materials from the Sunnyside Mill were incorporated into the home that Popplman built in Boulder City.

From the Nye County, Nevada Photograph Collection (PH-00221) -- Series VII. Other areas in Nye County -- Subseries VII.I. Wilson Family (Toiyabe Mountains, Nevada). Timbers and fastenings are from the Sunnyside Mill, Round Mountain, Nevada.

From the Nye County, Nevada Photograph Collection (PH-00221) -- Series VII. Other areas in Nye County -- Subseries VII.I. Wilson Family (Toiyabe Mountains, Nevada)

From the Nye County, Nevada Photograph Collection (PH-00221) -- Series VII. Other areas in Nye County -- Subseries VII.I. Wilson Family (Toiyabe Mountains, Nevada). In the center of the dredge the screw elevator can be seen. It brought the placer material from the bucket elevator on board the dredge where it was processed. It is said that it took 100 workers to assemble the dredge. The dredge could process between 500 and 1,000 tons of gravel per hour.

From the Nye County, Nevada Photograph Collection (PH-00221) -- Series VII. Other areas in Nye County -- Subseries VII.I. Wilson Family (Toiyabe Mountains, Nevada). On the right-hand side of the picture can be seen the pond on which the dredge floated.

From the Nye County, Nevada Photograph Collection (PH-00221) -- Series VII. Other areas in Nye County -- Subseries VII.I. Wilson Family (Toiyabe Mountains, Nevada). The hopper on the starboard side of the dredge is visible. The dredge processed the gravel through jigs as opposed to sluices. With the volume of material the dredge handled, a sluice would have been impractical. A jig has a diaphragm driven by an electric motor which pulsates. The Yuba jigs were about 42 inches long by 42 inches across. A bed in the jig was filled with steel shot. As the gravel material floated across the steel shot, the jig's pulsating diaphragm raised the steel shot-bed up and gold, being so much heavier than the gravel and the steel shot, would work its way down through the shot-bed. The jig bed usually has a 1/8-inch mesh stainless steel screen so that any gold finer than 1/8 inch will pass through the screen. The jig pulsated between 60 and 100 times a minute, a "steady throb." Gold coarser than 1/8 inch, being very heavy, would be held on top the screen beneath the bed of steel shot.

From the Nye County, Nevada Photograph Collection (PH-00221) -- Series VII. Other areas in Nye County -- Subseries VII.I. Wilson Family (Toiyabe Mountains, Nevada). Robert "Bob" Wilson’s Swedish grandfather immigrated to the United States at the age of 18. He worked for a while in Colorado as a steam engineer, and eventually ended up in Spokane, Washington, where he married and raised a family. Bob Wilson’s father, Gustavus Edward Wilson, was the oldest son of the gentleman pictured here. Bob Wilson’s grandfather was one of several investors who purchased a mine and mill in Goldfield, Nevada, in 1906, only to find that another company had previously come in and taken out the gold.