Olson, Red, 1986, The gyroseparator and its application on Deadwood Creek, in Burton, P.J., and Berg, H.C., comps., Placer mining: Yesterday, today, tomorrow: Proceedings of the eighth annual Alaska conference on placer mining-1986: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 18H, p. 67-68. https://doi.org/10.14509/711
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Gold; Mining Methods