Photograph of Trig Williams and a hydraulic press at Basic Magnesium, Inc.   Creator:   Basic Magnesium, Inc. ( Contributing Institution ) Publication Date:   1944-09-14 Type:   Photograph Source Institution:   Henderson District Public Libraries Holding Location:   Henderson District Public Libraries Subject Keyword:   Hydraulic presses Williams, Trig Research, Industrial -- Laboratories Machinery, supplies, equipment Men Genre:   Photographs Photograph of Trig Williams and a hydraulic press at Basic Magnesium, Inc.