Browse Items (36 total)

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Agricultural by-products equipment,1938

This piece of equipment is bolted to a concrete table. On the left is a box of assorted valves and other parts and a paint can.

Chemical processing equipment, 1938

On the right side of the room are two large pieces of equipment. A group of coils are laying against one of the machines. Hoses are laying on the floor. Three wooden structures are in the background.

Laboratory cupboard, 1938

This view inside a cupboard shows bottles and glassware filled with various substances.

Laboratory, 1938

This lab contains various pieces of equipment. A brick table is in the foreground. A substance is flowing on the floor.

Equipment parts, 1939

Seven equipment parts are displayed.

Self-propelled combine harvesting crops, rear view showing stalk wastes, 1955

The rear view of a self-propelled combine leaving behind stalk waste of crops being harvested in Washington County, Iowa.

Self-propelled combine harvesting crops, right rear view showing grain dust, 1955.

Shown from the right rear, a self-propelled combine takes down crops in Washington County, Iowa, while simultaneously harvesting the grain in a cloud of dust.

Self-propelled combine harvesting crops, right rear view showing crop stalks left behind, 1955

Shown from the right rear, a self-propelled combine harvests crops in Washington County, Iowa, leaving behind shreds of unwanted crop stalks.

Filtering operation for extracting oil from seeds, Oil extraction plant

Three researchers are examining the agricultural by-product during the filtering operation for extracting oil from seeds.

Operation of the pilot plant fractional distillation column, 1951?

Four researchers are participating in the operation of the pilot plant fractional distillation column.

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