General view of chemist Delores Horne analyzing the active constituent of a weed killer in the Dow Chemical Company's Analytical Laboratory located in Midland, Michigan. Per a notation accompanying the photograph, Ms.…

General view of an unidentified female employee at work in the Dow Chemical Company's saran film manufacturing facilities in Midland, Michigan. The employee appears to be using a type of press to smooth lengths of saran…

General view of a trade show display for the General Aniline & Film Corporation highlighting products marketed for use in the textile industry. Standing at the center of the display is research chemist Dr. Abraham O.…

General view of technicians (left to right) Lois Nystrom, Rosemary Kirchman, and Helen Lyness using vacuum tube titrators to titrate aluminum in a Dow Chemical Company laboratory. In the titration process, a solution of…

General view of technicians Marguerite Tenhunen (left) and Dorothy Ferris (right) using assorted apparatus in a Dow Chemical Company laboratory to determine the quantity of zinc present in experimental alloys.

General view of Clara Kellerman and another unidentified employee inspecting electric blasting cap shells at the Hercules Powder Company plant in Port Ewen, New York. Formed in 1912 as part of an anti-trust settlement…

General view of female employees inserting bridged wires into loaded electric blasting caps at the Hercules Powder Company plant in Port Ewen, New York. The individuals visible in the photograph are identified as…

General view of an unidentified female employee operating a machine used to inspect blasting cap shells at the Hercules Powder Company plant in Port Ewen, New York. Formed in 1912 as part of an anti-trust settlement…

General view of an unidentified female employee trimming bridge wires used in the electric blasting caps manufactured at the Hercules Powder Company plant in Port Ewen, New York. Formed in 1912 as part of an anti-trust…

General view of employee Emily Port inserting plugs and bridge wires into the shells of electric blasting caps manufactured at the Hercules Powder Company plant in Port Ewen, New York. Formed in 1912 as part of an…

General view of employee Jane Kaminski inserting plugs and bridge wires into the shells of electric blasting caps manufactured at the Hercules Powder Company plant in Port Ewen, New York. Formed in 1912 as part of an…

General view of employee Emily Port inserting plugs and bridge wires into the shells of electric blasting caps manufactured at the Hercules Powder Company plant in Port Ewen, New York. Formed in 1912 as part of an…

General view of employee Emily Port inserting plugs and bridge wires into the shells of electric blasting caps manufactured at the Hercules Powder Company plant in Port Ewen, New York. Formed in 1912 as part of an…

General view of employee Bertha Warren using embroidery scissors to trim platinum wires used in the electric blasting caps manufactured at the Hercules Powder Company plant in Port Ewen, New York. Formed in 1912 as part…

Close-up view of employee Dorothy Locke setting lead wires in a mold, part of the assembly line production of electric blasting caps, at the Hercules Powder Company plant in Port Ewen, New York. During the production of…

General view of employee Mildred Best soldering platinum bridge wires used in the electric blasting caps manufactured at the Hercules Powder Company plant in Port Ewen, New York. During the production of electric…

General view of employee Bertha Warren soldering platinum bridge wires used in the electric blasting caps manufactured at the Hercules Powder Company plant in Port Ewen, New York. During the production of electric…

General view of employee Bertha Warren trimming platinum wires used in the electric blasting caps manufactured at the Hercules Powder Company plant in Port Ewen, New York. Formed in 1912 as part of an anti-trust…

General view of soldering and bridge wire operations, part of the assembly line production of electric blasting caps, at the Hercules Powder Company plant in Port Ewen, New York. During the production of electric…

General view of an unidentified female employee operating an apparatus used to test special electric detonators manufactured at the Hercules Powder Company plant in Port Ewen, New York. Formed in 1912 as part of an…

General view of an unidentified female employee operating an automatic precision-assembly station used during the manufacture of detonators and initiators at the Hercules Powder Company plant in Port Ewen, New York. The…

General view of an unidentified female employee inspecting Vibrocaps manufactured at the Hercules Powder Company plant in Port Ewen, New York. Formed in 1912 as part of an anti-trust settlement with DuPont, the Hercules…

General view of unidentified female employees testing electric detonators manufactured at the Hercules Powder Company plant in Port Ewen, New York. Formed in 1912 as part of an anti-trust settlement with DuPont, the…

General view of employees at work assembling Vibrocaps manufactured at the Hercules Powder Company plant in Port Ewen, New York. Formed in 1912 as part of an anti-trust settlement with DuPont, the Hercules Powder…

General view of employee Elizabeth Bailey applying shunts to spooled Vibrocaps manufactured at the Hercules Powder Company plant in Port Ewen, New York.

Formed in 1912 as part of an anti-trust settlement with DuPont,…