Battery of modified Fisher retorts for the assaying of Illinois shales for shale oil demonstrated by W.J. Armon.
1 photograph and negative;
September 26, 1955;
Oil shale analysis
Manuscripts, maps, fieldnotes, and photographs may be viewed in-house only. Please contact the ISGS Special Collections Curator, Anne Huber, for an appointment at 217-300-0005 or email email@example.com Monday thru Friday, 8am-noon or 1pm-5pm.