Original oil and gas trade magazine vintage ad for CONTINENTAL OIL COMPANY. Main office was located Houston, Texas. Fracture with Adomite. Add your own success story to these. Adomite does so many things so effectively. Seals the fracture face, Longer fractures, Fewer standouts, Decreases friction loss, reduces hazard of emulsions and adaptable to virtually all types of crude. This unique 1957 old oilfield petroleum drilling additive magazine advertisement would display beautifully matted and framed.