In the first two decades of the twentieth century, the Keane Wonder Mine in the Funeral Mountains drew major investment and development for its gold and silver. About 1903, prospector Jack Keane discovered gold there, and the ore was of such high quality that the mine sold for $150,000 before development began. In late 1907, the Keane Wonder Mining Company completed an aerial tramway and mill. The tramway, with eleven wooden towers, carried ore in large buckets from the mine to the mill over 1 mile and a drop of 1,300 feet, using gravity on cables that also powered the crusher near the mine. At the mill, stamp milling separated gold and silver from quartz rock, then the pulverized ore mixed with water passed over silver-coated copper plates in an amalgamation process that captured valuable particles while the rest flowed onward. Waste material then went through a cyanide plant to extract additional gold and silver. Gold, silver, and some lead from the mine were hauled by wagon to Rhyolite, Nevada, the closest railhead, and the steam tractor Old Dinah made a couple of trips before breaking down on Daylight Pass. During the peak years from 1909 through 1911, 73,989 tons of ore yielded $682,209.69, an average of $9.22 per ton. The mine reportedly ceased operation in 1916 after its developed ore bodies were worked out, and reliable estimates placed its total production at $750,000.