SOME CENTURY OF PROGRESS EXHIBITS OF INTEREST TO CHEMISTS Union Carbide & Carbon Chemicals Corp.-Liquid air, Mallinckrodt Chemical Works.-Working models acetylene, welding equipment, flashlights, batteries, demonstrating the distillation of mercury and the sublimation of iodine. ultra-violet light equipment, alloys, solvents. National Sugar Refining Co. -- Cross-section of a Victor Chemical Works.-A large model reproducing in every detail the company's Nashville blast-furnace complete sugar refinery. U. S. Steel Corp.-Dioramas showing steps in steel phosphoric acid plant. The model discharges "slag" production; articles illustrating uses of alloy steels. and "acid." Firestone Tire & Rubber Co. -- A complete tire plant Abbott Laboratories.-Exhibit stresses the properties in operation. and applications of the vitamins.
