General view of an unidentified employee inspecting a saran bubble as it is extruded from a machine during the production of saran film at the Dow Chemical Company plant in Midland, Michigan. During production, the film…

Elevated view of employees at work in the Dow Chemical Company's saran film manufacturing facilities in Midland, Michigan. During production, saran film was trimmed and wound into so-called inventory rolls, such as…

General view of saran bubbles being extruded from rolling machines during the production of saran film at the Dow Chemical Company plant in Midland, Michigan. During production, the film passed through a series of…

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 an unidentified employee at work in the Dow Chemical Company's saran film manufacturing facilities in Midland, Michigan. Saran plastic is seen passing through some type of bath or wash by virtue of a…

General view of two unidentified employees at work in the Dow Chemical Company's saran film manufacturing facilities in Midland, Michigan. The employees are seen stretching a length of film between two rollers. During…

General view of employees at work in the Dow Chemical Company's saran film manufacturing facilities in Midland, Michigan. Initially developed for the U.S. Army to wrap arms and equipment for transport during World War…

General view of Joseph Maurer pouring ethyl cellulose into the hopper of a plastic extrusion machine at the Hercules Powder Company plant in Port Ewen, New York. In the machine, the ethyl cellulose was heated and then…

Close-up view of a plastic extrusion machine used to coat and insulate wires at the Hercules Powder Company plant in Port Ewen, New York. As visible in the photograph, ethyl cellulose was heated and then extruded as…

General view of Willard King working with an apparatus used for pilot plant operations at the Dow Chemical Company's Plastics Production Laboratory. Established in 1953 as an outgrowth of Dow's Physical Research…

General view of Wilbur Myers testing large-scale cracking and dehydrogenation processes on an apparatus in the Dow Chemical Company's Plastics Production Laboratory. Established in 1953 as an outgrowth of Dow's Physical…

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 Richard Bayne testing distillation and miniplant operations at the Dow Chemical Company's Plastics Production Laboratory. Established in 1953 as an outgrowth of Dow's Physical Research Laboratory, the…

General view of Willard Van Wingerden performing maintenance on a specialty instrument in the Dow Chemical Company's Plastics Production Laboratory. Established in 1953 as an outgrowth of Dow's Physical Research…

Aerial view of a section of the Dow Chemical Company's polystyrene plant located in Cartagena, Colombia. Constructed in the 1960s, the Cartagena plant subsequently underwent four expansions and boasted a manufacturing…

Aerial view of the Dow Chemical Company's polystyrene plant located in Cartagena, Colombia. Constructed in the 1960s, the Cartagena plant subsequently underwent four expansions and boasted a manufacturing capacity of…

Aerial view of the Dow Chemical Company's polystyrene plant located in Cartagena, Colombia. Constructed in the 1960s, the Cartagena plant subsequently underwent four expansions and boasted a manufacturing capacity of…

General view of the exterior of the Dow Chemical Company's Styrene plant located in Freeport, Texas. An organic compound derived from benzene, styrene is a precursor to polystyrene and was popularized in the 1940's as a…

General view of the exterior of the Dow Chemical Company's Styrene plant located in Freeport, Texas. An organic compound derived from benzene, styrene is a precursor to polystyrene and was popularized in the 1940's as a…

General view of the styrene finishing stills at a Dow Chemical Company plant in Midland, Michigan. An organic compound derived from benzene, styrene is a precursor to polystyrene and was popularized in the 1940's as a…

General view of an unidentified employee climbing stairs at the Dow Chemical Company's Styrene plant located in Freeport, Texas. An organic compound derived from benzene, styrene is a precursor to polystyrene and was…

General view of the exterior of a section of the Dow Chemical Company's Styrene plant located in Freeport, Texas. An organic compound derived from benzene, styrene is a precursor to polystyrene and was popularized in…

General view of the exterior of a section of the Dow Chemical Company's Styrene plant located in Freeport, Texas. An organic compound derived from benzene, styrene is a precursor to polystyrene and was popularized in…

General view of the manufacturing of saran film at the Dow Chemical Company plant in Midland, Michigan. During production, saran film was trimmed and wound into so-called inventory rolls, such as those visible in the…

General view of an unidentified employee handling a saran bubble as it is extruded from a machine during the production of saran film at the Dow Chemical Company plant in Midland, Michigan. During production, the film…