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Steel bases for the bogie wheel assemblies of Army halftrac cars are inspected in a Midwest tire plant. Accurate gauging is necessary to insure positive fit in molds and in wheel assemblies. Goodrich, Akron, Ohio

Steel bases for the bogie wheel assemblies of Army halftrac cars are i...

Public domain photograph - working class people, the 1930s United States, work, labor, worker, free to use, no copyright restrictions image - Picryl description

Son of worker weighting up milk. Mineral King cooperative farm. Tulare County, California. Accurate milk records of each cow is kept

Son of worker weighting up milk. Mineral King cooperative farm. Tulare...

Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description

Production. Tin smelting. A laboratory assistant at a Southern tin smelter performs delicate analytical operations that determine the amounts of pure metal remaining in slags from the furnaces. Accurate laboratory control is one of the important reasons why the percentage of metal recovery from the South American ore used at the plant is remarkably high

Production. Tin smelting. A laboratory assistant at a Southern tin sme...

Public domain photograph of laboratory, science, research, free to use, no copyright restrictions image - Picryl description

Accurate records are kept of each cow's milk production. Hillview Cooperative, Osage Farms, Missouri

Accurate records are kept of each cow's milk production. Hillview Coop...

Public domain image of cattle, livestock, farm animals, agriculture, free to use, no copyright restrictions - Picryl description

Accurate weight is recorded of the dehydrated vegetables in determining the degree of dehydration. Regional agricultural research laboratory, Albany, California

Accurate weight is recorded of the dehydrated vegetables in determinin...

Public domain photograph of laboratory, science, research, free to use, no copyright restrictions image - Picryl description

Production. Tin smelting. This young technician is using a laboratory balance to determine the amount of tin remaining in slag from the furnaces of a large Southern smelter which extracts the pure metal from South American ore. Accurate laboratory control is one of the important reasons why the percentage of metal recovery at the plant is remarkably high

Production. Tin smelting. This young technician is using a laboratory ...

Public domain photograph of laboratory, science, research, free to use, no copyright restrictions image - Picryl description

Production. Tin smelting. This young technician is using a laboratory balance to determine the amount of tin remaining in slag from the furnaces of a large Southern smelter which extracts the pure metal from South American ore. Accurate laboratory control is one of the important reasons why the percentage of metal recovery at the plant is remarkably high

Production. Tin smelting. This young technician is using a laboratory ...

Public domain photograph of laboratory, science, research, free to use, no copyright restrictions image - Picryl description

Production. Tin smelting. A laboratory assistant at a Southern tin smelter performs delicate analytical operations that determine the amounts of pure metal remaining in slags from the furnaces. Accurate laboratory control is one of the important reasons why the percentage of metal recovery from the South American ore used at the plant is remarkably high

Production. Tin smelting. A laboratory assistant at a Southern tin sme...

Public domain photograph of laboratory, scientist, free to use, no copyright restrictions image - Picryl description

Production. Tin smelting. A laboratory assistant at a Southern tin smelter performs delicate analytical operations that determine the amounts of pure metal remaining in slags from the furnaces. Accurate laboratory control is one of the important reasons why the percentage of metal recovery from the South American ore used at the plant is remarkably high

Production. Tin smelting. A laboratory assistant at a Southern tin sme...

Public domain photograph of laboratory, scientist, free to use, no copyright restrictions image - Picryl description

Accurate workmanship is required to make perfectly uniform shells for the Army. Inspectors are on the alert to reject those which fail to meet requirements. Oldsmobile, Lansing, Michigan

Accurate workmanship is required to make perfectly uniform shells for ...

Picryl description: Public domain image of a factory, plant, manufacture, assembly line, industrial facility, early 20th-century industrial architecture, free to use, no copyright restrictions.

Production. Tin smelting. Two laboratory assistants at a Southern tin smelter perform delicate analytical operations that determine the amounts of pure metal remaining in slags from the furnaces. Accurate laboratory control is one of the important reasons why the percentage of metal recovery from the South American ore used at the plant is remarkably high

Production. Tin smelting. Two laboratory assistants at a Southern tin ...

Public domain photograph of laboratory, scientist, free to use, no copyright restrictions image - Picryl description