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Blending. Many batches of synthetic rubber latex are batched and blended in concrete storage tanks at the Institute plant. This blending assures uniformity of the product. After blending the rubber content is separated by coagulation

Blending. Many batches of synthetic rubber latex are batched and blend...

Picryl description: Public domain image of an industrial building, factory, workshop, workers, 20th century, free to use, no copyright restrictions.

Conversion. Rendering of household fats. Reclaimed household greases from America's kitchens drain into an open vat at a rendering plant. Some of the batches are recooked with additional fats to bring them up to certain specific grades

Conversion. Rendering of household fats. Reclaimed household greases f...

Public domain photograph of 1930s-1940s industrial development, no copyright restrictions image - Picryl description

The mill room. Measured batches are delivered to these tire workers, who worked in a room full of batteries of rolling mills. Here, by a rolling process, the rubber is squeezed, pulled, pounded and mixed with the other ingredients until all are blended into a "treated rubber" stock. Firestone (General Tires), Akron, Ohio

The mill room. Measured batches are delivered to these tire workers, w...

Public domain image of an industrial building, factory, structure, works, 19th-20th century industrial revolution, free to use, no copyright restrictions - Picryl description