gronwall practiced as a civil engineer in germany (1902-1903) and then immigrated to the united states in 1904, where he worked at various steel works for longer or shorter periods; he was connected with the american bridge co., and the pennsylvania railroad and other engineering companies.

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Gronwall practiced as a civil engineer in Germany (1902-1903) and then immigrated to the United States in 1904, where he worked at various steel works for longer or shorter periods; he was connected with the American Bridge Co., and the Pennsylvania Railroad and other engineering companies.