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Many of the company's offerings, including oxygen and hydrogen, are building-block chemicals. Air Products took advantage and diversified into a wide range of process intermediate chemicals. Elsewhere, engineering talent created a new opportunity in helium that led to a worldwide production and supply leadership position.

In 1960, company founder Leonard Pool is featured on the cover of Business Week.

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Pictured: Pool with successor Ed Donley
In 1961, Air Products begins manufacturing chemicals through a joint venture to convert refinery by-products into oxo-alcohols for use in producing plasticizers.

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Pictured: Air Products' Calvert City, Kentucky plant—produces a wide range of industrial and specialty chemicals, including water-based emulsion polymers and surfactants.
In 1962, the company acquires the Houdry Process Company and its subsidiary the Catalytic Construction Company.

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Pictured: The Houdry Laboratory in Linwood, Pennsylvania.
Air Products stock is listed on the New York Stock Exchange for the first time in 1962 as its sales pass $100 million.
In the mid-60s, the company widens its global presence with subsidiaries in Belgium, West Germany, and South Africa.

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Pictured: Kempton Park, South Africa
The company's position in chemicals expands with the 1969 acquisition of Escambia Chemical Corporation, a U.S. company in Pensacola, Florida.

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Pictured: Pensacola, Florida.
Air Products develops a process for the recovery of helium from natural gas, along with the process to liquefy natural gas and the heat exchanger for compressing it.

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Pictured: Liberal, Texas.

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