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In an effort to age the site:
GE was formed in 1892.
Columbia Steel Company of San Francisco merged with So. California Iron and Steel Company of Los Angeles, CA in January, 1922. By the end of the year, Columbia Steel Company had merged with Utah Coal and Coke to form Columbia Steel Corporation. The corporation had a Market Street address in San Francisco.
Nalco was founded in 1928 in Chicago, Illinois.

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