John J. Paro

The Hallstar Co. manufactures chemicals and additives to the polymer and personal care industries. The firm’s products and markets include beauty and personal care solutions, elastomer modifiers, thermoplastic modifiers, coatings modifiers and other market solutions. The company was founded in 1986 and is headquartered in Chicago, IL.

American Chemistry Council, Inc. operates as a trade association providing research services and promotes business interests. It represents companies engaged in the business of chemistry. The company was founded in 1971 and is headquartered in Washington, DC.

Calgon Carbon Corp. engages in the manufacture, supply, reactivation, and application of activated carbon. Its products include activated carbon cloth, diatomaceous earth and perlites, ion exchange, pelletized activated carbon, powdered activated carbon, and granular activated carbon. The company was founded in 1942 and is headquartered in Moon Township, PA.

Adler Planetarium & Astronomy Museum Operates and maintains planetarium and museum. It provides astronomy education for students, adults and families through variety of lectures and special events. The company was founded by Max Adler in 1930 and is headquartered in Chicago, IL.