Incorporated in 1912, Atlas Powder Company functioned as an independent explosives and chemicals company until 1971, when it was purchased by Imperial Chemical Industries Limited (U.K.) and became its American affiliate under the name ICI Americas, Inc. The collection consists of minutes, reports, and correspondence from Atlas in addition to both predecessor and subsidiary companies.

Crawford Hallock Greenewalt (1902-1993) was a chemical engineer and the President of the DuPont Company from 1948 to 1962. The collection consists of photographs relating to the career of Crawford H. Greenewalt. The album consists of photographs of a trip Greenewalt made to Argentina in 1956 related to expansion plans for the Ducilo plant. The views were primarily taken at the Buenos Aires airport and at a banquet meeting.