Iowa Heritage Digital Collections
State Library of Iowa

Browse Items (170 total)

Pouring milkweed seeds into the solvent oil extractor, Oil extraction plant
UTR-10 University Teaching Reactor, Chemical Engineering Annex
Mining engineering students at Big Five Tunnel
Mining engineering students in a gypsum mine
Coal Mine Inspection at Des Moines Coal and Mining Co.,  Marquisville, Iowa
Young researcher checking equipment in laboratory, 1980
Researcher surrounded by control panels, 1973
Instructor and student, 1947
Researcher with slide rule
Bubble cap column
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