General view of an unidentified employee using assorted machinery to test the destructive range and effectiveness of detonators and initiators manufactured at the Hercules Powder Company plant located in Port Ewen, New…

General view of employees at work in a facility used for the production and testing of detonators and initiators manufactured at the Hercules Powder Company plant in Port Ewen, New York. Formed in 1912 as part of an…

Close-up view of an automatic press machine used to fill shells with an explosives charge 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 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 employee operating a Beckman (Berkeley Division) Time Interval Meter at the Hercules Powder Company plant in Port Ewen, New York. Time Interval Meters were commonly used for a range of…

General view of an unidentified employee setting a tray of shells into an apparatus used during the production of blasting caps at Hercules Powder Company plant in Port Ewen, New York. The apparatus is likely a press…

General view of employee Kenneth Newell operating a press machine used to fill electric blasting caps with an explosive charge at the Hercules Powder Company plant in Port Ewen, New York. The operation was…

General view of employee Raymond Demskie operating a series of levers to remotely mix explosive powders used in the electric blasting caps produced at the Hercules Powder Company plant in Port Ewen, New York. The levers…

General view of employees Thomas Stauble (left, foreground) and Andrew Tubby (right, foreground) using assorted machinery to test the destructive range and effectiveness of detonators and initiators manufactured at the…

General view of an unidentified employee operating a machine used to produce shell cartridges used in the manufacture of dynamite at the Hercules Powder Company plant in Kenvil, New Jersey. Formed in 1912 as part of an…

General view of an unidentified female employee operating a machine used to sort time cards at the Hercules Powder Company plant in Kenvil, New Jersey. Per an article in the August 1919 edition of the Hercules Mixer,…

General view of Ray Kent checking a polymer operation at the Dow Chemical Company's Plastics Production Laboratory. Established in 1953 as an outgrowth of Dow's Physical Research Laboratory, the Plastics Production…

General view of a section of the interior of the Cliffs Dow wood distillation plant located in Marquette, Michigan. Seeking a source of raw material for its new plastic, ethylcellulose, the Dow Chemical Company joined…

General view of a section of the interior of the Cliffs Dow wood distillation plant located in Marquette, Michigan. Seeking a source of raw material for its new plastic, ethylcellulose, the Dow Chemical Company joined…

General view of a section of the magnesium rolling mill at the Dow Chemical Company facilities located in Madison, Illinois. Dedicated in 1954, the magnesium fabrication plant in Madison was the world's first facility…

Elevated view of the magnesium rolling mill and extrusion press (right-hand side of the photograph) at the Dow Chemical Company facilities located in Madison, Illinois. The 13-ton extrusion press, which was manufactured…

Elevated view of the magnesium rolling mill at the Dow Chemical Company facilities located in Madison, Illinois. The plant's 13-ton extrusion press, which was manufactured in Duisburg, Germany and could produce…

General view of the 13-ton extrusion press at the Dow Chemical Company Magnesium Fabrication plant facilities located in Madison, Illinois. Produced in Duisburg, Germany, the press measured 250 feet long and could…

General view of a section of the Dow Chemical Company Magnesium Fabrication plant facilities located in Madison, Illinois. A 13-ton extrusion press produced in Duisburg, Germany is visible on the left-hand side of the…

General view of a section of the magnesium rolling mill at the Dow Chemical Company facilities located in Madison, Illinois. Dedicated in 1954, the magnesium fabrication plant in Madison was the world's first facility…

General view of a section of the magnesium rolling mill at the Dow Chemical Company facilities located in Madison, Illinois. Dedicated in 1954, the magnesium fabrication plant in Madison was the world's first facility…

General view of a section of the magnesium rolling mill at the Dow Chemical Company facilities located in Madison, Illinois. Dedicated in 1954, the magnesium fabrication plant in Madison was the world's first facility…

General view of several unidentified employees surveying the magnesium rolling mill at the Dow Chemical Company facilities located in Madison, Illinois. Dedicated in 1954, the magnesium fabrication plant in Madison was…

Overhead view of the magnesium rolling mill at the Dow Chemical Company facilities located in Madison, Illinois. Dedicated in 1954, the magnesium fabrication plant in Madison was the world's first facility designed for…

General view of an unidentified employee examining a bobbin from a drawtwister used for the production of Zefran, an acrylic fiber, at the Dow Chemical Company's Textile Research Laboratory located in Pittsburg,…