Original oil and gas trade magazine vintage ad for THE KOCH ENGINEERING COMPANY, INC. was located at 321 West Douglas Avenue, Wichita, KS. Horizontal Kaskade Vacuum Tower at Hartford, Illinois refinery of Wood River Oil and Refining Company. This wet vacuum unit operating on heavy reduced Wyoming, West Texas and Oklahoma crudes produces negative oliensis asphalts. This unique 1950 old petroleum refining industry equipment magazine advertisement would display beautifully matted and framed. Great graphics.