Yuba County, California; its resources and advantages . ose, and when the hull is completedwater is run into the pit by a ditch orflume. The dredge in operation floatson water brought to it in this way, andits function is to dig up the soil andgravel and wash out the gold. It movesforward and the ground is mined anddeposits the tailings behind. The YubaCounty dredge field is especially inter-esting because of its magnitude, and be-cause of the conditions which requirethe employment of exceptionally heavymachinery and necessitate dredging to agreater depth. For instance, the landsof the Yuba Co
Yuba County, California; its resources and advantages . ose, and when the hull is completedwater is run into the pit by a ditch orflume. The dredge in operation floatson water brought to it in this way, andits function is to dig up the soil andgravel and wash out the gold. It movesforward and the ground is mined anddeposits the tailings behind. The YubaCounty dredge field is especially inter-esting because of its magnitude, and be-cause of the conditions which requirethe employment of exceptionally heavymachinery and necessitate dredging to agreater depth. For instance, the landsof the Yuba Consolidated Goldfield Com-pany comprises 3G00 acres, constitutingperhaps the greatest gold mine in theworld; certainly the greatest gold dredg-ing property. Twelve machines, all ofthem giants, the greatest of their kind,are at work on these lands, and someidea of the magnitude of the mine may behad from the fact that these machines,working steadily twenty-four hours everyday, would require fifty years to exhaustthe land at the present rate of ONE OK THE OI- ) I) K I I)C,i;kS AT HAMMONIDN, VLIiA CUlNTV, YUBA COUNTY, CALIFORNIA. 19 The Marysville Dredge Company, withlands adjoining, has two machines atwork, and more than fifty years wouldbe required for these to complete themining of this area. Both of these min-ing dredger centers are operated by elec-tric power supplied from Colgate on theYuba river. In Marysville are maintained the YubaConstruction Works that does all of thestructural work for the dredgers in theState. The factory was started in op-eration in April. 1907. The plant isvalued at $300,000, and the site coversthree blocks of land. It is the only es-tablishment in the State that is devotedexclusively to work for dredge in full operation there are em-ployed 125 men and the value of theoutput annually is $2,000,000. Aside fromthose employed at the constructionworks, some 400 men are constantlyworking at the dredgers. Electric Pow
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