Original oil and gas trade magazine vintage ad for ATTAPULGUS MINERALS CHEMICALS. CORPORATION. Main office and factory was located in Philadelphia, PA. POROCEL activated bauxites for your processing needs. Removes odors, colors, tastes, moisture, acids, sulfur, fluorides and unsaturates from process liquids or gases. This unique 1953 old petrochemical industry magazine advertisement would display beautifully matted and framed.