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Samples of ore and box containing samples of milled tailing solutions which are sent to Silver City. Mogollon, New Mexico

Samples of ore and box containing samples of milled tailing solutions ...

Picryl description: Public domain image related to death, coffin, funeral, burial, monument, cemetery, free to use, no copyright restrictions.

Drawing off solutions into test tubes in micro-biological determination of vitamins in dehydrated vegetables. Regional agricultural research laboratory, Albany, California

Drawing off solutions into test tubes in micro-biological determinatio...

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

A black and white photo of a wooden box. Great Depression Era, New Mexico

A black and white photo of a wooden box. Great Depression Era, New Mex...

Public domain photograph related to Great Depression, free to use, no copyright restrictions image - Picryl description

Synthetic rubber (Ameripol). Carefully selected soap is used in the making of solutions used during the manufacture of synthetic rubber. This worker is mixing a solution at the B.F. Goodrich plant, in Akron, Ohio. It is mixed in a nickel-lined tank. Goodrich

Synthetic rubber (Ameripol). Carefully selected soap is used in the ma...

Actual size of negative is C (approximately 4 x 5 inches). Title and other information from caption card. Transfer; United States. Office of War Information. Overseas Picture Division. Washington Division; 1944... More

Apparatus used at the laboratory at the C & NW RR's 40th Street yards for analysing solutions of metals used in locomotives and the railroad plant, in general, Chicago, Ill.

Apparatus used at the laboratory at the C & NW RR's 40th Street yards ...

Picryl description: Public domain image of a locomotive, train, railroad, railway, free to use, no copyright restrictions.

New type of plating machine being used at the Hamilton Standard Propeller Corporation. It automatically dips the part into the proper solutions for the proper lengths of time. East Hartford, Connecticut

New type of plating machine being used at the Hamilton Standard Propel...

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.

Government discovers method to preserve film. (2) Expansion and contraction, like paper and other sheet materials made from cellulose, films expand as they take up moisture and contract as they lose it, and the extent of the change is different in the two directions of them. This may cause some distortion of the image, and therefore is of particular importance where the image must be true to scale, such as in aerial photography. C.O. Pope is shown with a type of expansiveity tester used and which was designed by the Bureau of Standards. Long strips of film are suspended under constant tension in the [cabinet?] in which the humidity is varied by means of [...] solutions. The change in length is indicated [...continuously?] on a scale by means of an optical-level arrangement, 7/8/38

Government discovers method to preserve film. (2) Expansion and contra...

Public domain photograph of people, building, free to use, no copyright restrictions image - Picryl description

New type of plating machine being used at the Hamilton Standard Propeller Corporation. It automatically dips the part into the proper solutions for the proper length of time. East Hartford, Connecticut

New type of plating machine being used at the Hamilton Standard Propel...

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.

Dr. G.I. Jones, associate chemist, conducts tests in determination of vitamin B complex in dehydrated vegetables. Regional agricultural research laboratory, Albany, California. This test must be conducted in light of certain quality which will not destroy vitamins in solutions

Dr. G.I. Jones, associate chemist, conducts tests in determination of ...

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

Synthetic rubber (Ameripol). This worker is standing on a "blowdown" tank, about ready to tap a polymerizer tank at the Akron, Ohio synthetic rubber plant of the B.F. Goodrich Company. The latex blended in the latter tank is stabilized in the "blow downs." A large blending tank increases the uniformity of these synthetic solutions by mixing the contents of seven or eight of these tanks. Goodrich

Synthetic rubber (Ameripol). This worker is standing on a "blowdown" t...

Public domain photograph of 1930s-1940s US industrial development, Second World War, US war production, indusry, no copyright restrictions image - Picryl description

Steel manufacture, Allegheny-Ludlum. Steel couplings such as these are used to extend short lengths of pipe for many miles. Steel piping is used to convey solutions and gases in numerous plants engaged in defense production

Steel manufacture, Allegheny-Ludlum. Steel couplings such as these are...

Public domain photograph of factory building, free to use, no copyright restrictions image - Picryl description

Box containing samples of milled tailing solutions which are sent to Silver City, New Mexico, for analysis. Mogollon, New Mexico

Box containing samples of milled tailing solutions which are sent to S...

Public domain photograph - New Mexico, United States, free to use, no copyright restrictions image - Picryl description

Synthetic rubber (Ameripol). Carefully selected soap is used in the making of solutions used during the manufacture of synthetic rubber. This worker is mixing a solution at the B.F. Goodrich plant, in Akron, Ohio. It is mixed in a nickel-lined tank. Goodrich

Synthetic rubber (Ameripol). Carefully selected soap is used in the ma...

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

Precise measurements. Washington, D.C. June 17. W.H. Goss, of the National Bureau of Standards, is shown making very precise measurements of the electrical conductance of standard solutions, which are the basis of industrial control of boiled water, steam condensates, beet sugar refining, metal cleaning baths, and of various other technical operations. 6/17/37

Precise measurements. Washington, D.C. June 17. W.H. Goss, of the Nati...

Public domain photograph, 1910s-1920s portrait, American, free to use, no copyright restrictions image - Picryl description

Parke, Davis and Company, manufacturing chemists, Detroit, Michigan. Sterilizing medicinal solutions in autoclave

Parke, Davis and Company, manufacturing chemists, Detroit, Michigan. S...

Public domain photograph of 1930s industry, war production in the United States free to use, no copyright restrictions image - Picryl description

PRESIDENT GREETS PATROL BOYS. WASHINGTON, D.C. MAY 23. THE PRESIDENT AND MRS. ROOSEVELT AS THEY GREETED THE SCHOOL SAFETY PATROL BOYS THAT MARCHED DOWN CONSTITUTION AVENUE TODAY. THE NAVY BAND HEADED THE PARADE WHICH NUMBERED NEARLY 8000 BOYS FROM SCHOOLS ALL OVER THE COUNTRY. THE BOYS HELD A CONFERENCE IN THE LABOR BUILDING AND TOLD WHAT THEY THINK OF AUTOMOBILE DRIVERS AND WHAT SOME SOLUTIONS TO TRAFFIC PROBLEMS MIGHT BE

PRESIDENT GREETS PATROL BOYS. WASHINGTON, D.C. MAY 23. THE PRESIDENT A...

A large group of people standing in front of a building. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

Synthetic rubber (Ameripol). Carefully selected soap is used in the making of solutions used during the manufacture of synthetic rubber. This worker is mixing a solution at the B.F. Goodrich plant, in Akron, Ohio. It is mixed in a nickel-lined tank. Goodrich

Synthetic rubber (Ameripol). Carefully selected soap is used in the ma...

Public domain photograph of 1930s industry, war production in the United States free to use, no copyright restrictions image - Picryl description

Dr. G.I. Jones, associate chemist, conducts tests in determination of vitamin B complex in dehydrated vegetables. Regional agricultural research laboratory, Albany, California. This test must be conducted in light of certain quality which will not destroy vitamins in solutions

Dr. G.I. Jones, associate chemist, conducts tests in determination of ...

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

Synthetic rubber (Ameripol). Carefully selected soap is used in the making of solutions used during the manufacture of synthetic rubber. This worker is mixing a solution at the B.F. Goodrich plant, in Akron, Ohio. It is mixed in a nickel-lined tank. Goodrich

Synthetic rubber (Ameripol). Carefully selected soap is used in the ma...

Actual size of negative is C (approximately 4 x 5 inches). Caption card lists some of the printing history of image. Title and other information from caption card. Transfer; United States. Office of War Informa... More

Synthetic rubber (Ameripol). This worker is standing on a "blowdown" tank, about ready to tap a polymerizer tank at the Akron, Ohio synthetic rubber plant of the B.F. Goodrich Company. The latex blending tank increases the uniformity of these synthetic solutions by mixing the contents of seven or eight of these tanks. Goodrich

Synthetic rubber (Ameripol). This worker is standing on a "blowdown" t...

Picryl description: Public domain image of people, meeting, eating, drinking, food, beverage, 1930s, free to use, no copyright restrictions.