Walter F. Rittman's gasoline plant, Pittsburgh, Pennsylvania, USA, 1915. Walter F. Rittman (1883-1954) was a chemical engineer who invented a process

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Walter F. Rittman's gasoline plant, Pittsburgh, Pennsylvania, USA, 1915. Walter F. Rittman (1883-1954) was a chemical engineer who invented a process which increased the amount of gasoline refined from crude oil.

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Photo credit: © LIBRARY OF CONGRESS/SCIENCE PHOTO LIBRARY / Alamy / Afripics
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