Search Results
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2 items
Experimental blast furnace on burden of phosphate
- 1930s
Two views of the experimental blast furnace on a burden (a load, especially a heavy one) of phosphate at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory plant.
The Fixed Nitrogen Research…
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Interior of Engine Room at the Fixed Nitrogen Research Laboratory
- 1932-Jan-19
General view of the Engine Room at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. showing assorted machinery and apparatus.
The Fixed Nitrogen Research Laboratory…
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3 items
Experimental blast furnace on burden of phosphate
- 1930s
Three views of the experimental blast furnace on a burden (a load, especially a heavy one) of phosphate at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory plant.
The Fixed Nitrogen Research…
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Employees opening cinder-notch on No. 2 experimental blast furnace
- 1932-Oct-12
General view of unidentified employees opening the cinder-notch on the No. 2 experimental blast furnace on a burden (a load, especially a heavy one) of phosphate at the U.S. Department of Agriculture's Fixed Nitrogen…
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Experimental blast furnace at Fixed Nitrogen Research Laboratory plant
- 1930s
General view of an experimental blast furnace at a U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory plant. The Fixed Nitrogen Research Laboratory (F.N.R.L.) was established at American University in…
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Blowing out experimental blast furnace
- 1934-Jan
General view of the blowing out process for the experimental blast furnace at a Fixed Nitrogen Research Laboratory facility. The process of blowing out, also known as "raking out," is undertaken when production from a…
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British Phosphate Commission motor ship
- 1961
General view of the M.V. "Triaster" motor ship being loaded with phosphate at the cantilever located in Christmas Island, Nauru. This ship was managed by the British Phosphate Commissioners, a board of representatives…
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2 items
U.S. Department of Agriculture facilities
- 1940-Aug-23
Two exterior views of unidentified facilities believed to be associated with the U.S. Department of Agriculture.
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2 items
Aerial view of U.S. Department of Agriculture facilities
- Circa 1930
Two aerial views of facilities believed to be associated with the U.S. Department of Agriculture.
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Technician with Fixed Nitrogen Research Laboratory apparatus
- 1920s
General view of an unidentified analytical apparatus and technician at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. The Fixed Nitrogen Research Laboratory…
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2 items
Aerial view of U.S. Department of Agriculture facilities
- 1936
Two aerial views of the U.S. Department of Agriculture complex located in Washington, DC. The second photograph was taken during the construction of the Administration Building and East and West Wings. The in-progress…
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3 items
U.S. Department of Agriculture buildings
- 1920s
Three exterior views of unidentified buildings believed to be associated with the U.S. Department of Agriculture.
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U.S. Department of Agriculture personnel
- 1950s
General view of U.S. Department of Agriculture personnel at an unidentified facility. Per a notation on the verso of the photograph, the individuals are identified (in no particular order) as follows: K.S. Love;…
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Portrait of James Wilson (1835-1920)
- 1910s
Portrait of James Wilson (1835-1920), who served as Secretary of Agriculture from 1897 to 1913. Wilson's tenure as Secretary is regarded as a period distinguished by the modernization of agricultural methods, as well as…
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Exhibit concerning fertilizer values
- Circa 1926
U.S. Department of Agriculture exhibition display concerning fertilizer values as determined by per cent of plant food. The display includes several photographs of a range of agricultural crops, including wheat, cotton,…
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James Wilson (Secretary of Agriculture 1897-1913)
- 1910s
Photograph of James Wilson, Secretary of Agriculture from 1897 to 1913, seated in a horse-drawn carriage with an unidentified African American driver. Wilson's tenure as Secretary is regarded as a period distinguished…
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Mr. Merz using apparatus to determine the hygroscopicity of fertilizer materials
- Circa 1928
General view of Mr. Merz using an apparatus to determine the hygroscopicity of fertilizer materials and mixtures at the the Arlington Experimental Farm in Arlington, Virginia. Established by an act of Congress in April…
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Dick Adams using apparatus to determine the hygroscopicity of fertilizer materials
- Circa 1928
General view of Dick Adams using an apparatus to determine the hygroscopicity of fertilizer materials and mixtures at the the Arlington Experimental Farm in Arlington, Virginia. Established by an act of Congress in…
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2 items
Equipment used to produce intermediate for conversion to potassium metaphosphate
- Circa 1934
Two views of apparatus and equipment used to produce an intermediate suitable for conversion to potassium metaphosphate at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington,…
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Exterior view of the Fixed Nitrogen Research Laboratory
- 1926-Apr
General view of the exterior of the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory facility located at American University near Washington, D.C. The Fixed Nitrogen Research Laboratory (F.N.R.L.) was…
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2 items
Experimental blast furnace at Fixed Nitrogen Research Laboratory plant
- 1932-Oct-12
Two views of the No. 2 experimental blast furnace on a burden (a load, especially a heavy one) of phosphate at a U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory plant.
The Fixed Nitrogen Research…
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9 items
Experimental blast furnace plant during Tennessee Valley Authority operation
- 1934-Apr-05
Assorted views of the Fixed Nitrogen Research Laboratory's experimental blast furnace plant during a Tennessee Valley Authority (T.V.A.) operation.
The Fixed Nitrogen Research Laboratory (F.N.R.L.) was established at…
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Employees observing temperature inside Royster stoves at experimental blast furnace
- 1934-Apr-05
General view of unidentified employees observing the temperature inside the Royster stoves at the Fixed Nitrogen Research Laboratory's experimental blast furnace plant during a Tennessee Valley Authority (T.V.A.)…
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Personnel at experimental blast furnace plant
- 1934-Apr-05
Group photograph of personnel at the Fixed Nitrogen Research Laboratory's experimental blast furnace plant, taken at the conclusion of a Tennessee Valley Authority (T.V.A.) operation. Per notations accompanying the…
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Emptying slag ladle on No. 2 experimental blast furnace
- 1932-Oct-12
General view of a worker emptying the slag ladle on the No. 2 experimental blast furnace on a burden (a load, especially a heavy one) of phosphate at the U.S. Department of Agriculture's Fixed Nitrogen Research…
