This is a close-up view of a pulley using two connected chains.
Iowa State University first offered chemical engineering courses in 1909. The Department of Mining Engineering, Ceramics, and Chemical Engineering was established in 1913. The Department of Chemical Engineering became a separate department in 1920 and under went numerous name changes over the years, which include the Department of Chemical Engineering (1920-1928, 1956-1973, 1978-2005), Department of Chemical and Mining Engineering (1928-1956), Department of Chemical and Nuclear Engineering (1973-1978), and Department of Chemical and Biological Engineering (2005-present).
Iowa State University
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14.7 x 20.1 cm