Photograph of a flotation machine at Basic Magnesium, Inc.   Creator:   Basic Magnesium, Inc. ( Contributing Institution ) Publication Date:   1943-06-30 Type:   Photograph Source Institution:   Henderson District Public Libraries Holding Location:   Henderson District Public Libraries Subject Keyword:   Flotation Ore-dressing Gabbs Valley (Nev.) Machinery, supplies, equipment Men Spatial Coverage:   Gabbs Valley (Nev.) Genre:   Photographs Photograph of a flotation machine at Basic Magnesium, Inc.