Print, Photographic

Black and white photographic print depicting a flowchart display of the grinding of tabular alumina at the Champion Spark Plug Co.
Typed on verso: Champion "Open House" - Sunday, October 26, 1947.
Department #00 - Ore Dressing, particularly the fine grinding of tabular alumina.
Prepared by: Mr. D.Z. Dailey, Foreman.
Strings from the flowsheet to the tops of the bottles show the state of the product at that particular point. Bottles contain samples of aluminum oxide and show the state of the products at the state in the process where the strings leading from the bottles are attached to the drawing.