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All Collections- All fields: control
(3090 results)
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- So. Platte Drg. Co., control room
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A worker operates the controls of the South Platte Dredging Company hydraulic placer gold mining dredge probably near Fairplay (Park County), Colorado. The man sits in the control room and holds a control lever in each hand. Other control levers... -
South Platte Dredging Co.--Equipment & supplies--1930-1950.; Control rooms--Colorado--Fairplay--1930-1950.; Fairplay (Colo.)--1930-1950.; Dredges--Colorado--Fairplay--1930-1950.; Hydraulic mining--Colorado--Fairplay--1930-1950.;... -
[between 1930 and 1950?]
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- Magnetite filters & filter control building
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Show long concrete channels, which are magnetite filters, at the Denver Sewage Disposal Works Plant. A concrete walkway with railing leads to the filter control building in the background. The Denver Sewage Disposal Works Plant is located at 50th... -
Denver Sewage Disposal Works--Buildings--1930-1940.; Filters and filtration--Colorado--Denver--1930-1940.; Sewage disposal plants--Colorado--Denver--1930-1940.; Denver (Colo.)--1930-1940.; Buildings--Colorado--Denver--1930-1940.;... -
[between 1930 and 1940?]
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- Magnetite filters & control building
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Shows long concrete channels, which are magnetite filters, at the Denver Sewage Disposal Works Plant. A concrete walkway with railing leads to the filter control building in the background. The Denver Sewage Disposal Works Plant is located at 50th... -
Denver Sewage Disposal Works--Buildings--1930-1940.; Filters and filtration--Colorado--Denver--1930-1940.; Sewage disposal plants--Colorado--Denver--1930-1940.; Denver (Colo.)--1930-1940.; Buildings--Colorado--Denver--1930-1940.;... -
[between 1930 and 1940?]
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- Henderson's modern mill control room monitors every vital function in the milling process.
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Workers in the control room at the Henderson Mine and mill in Empire, Clear Creek County, Colorado shows: telephones, desk and control panels. -
Empire (Colo.)--1980-1990.; Henderson Mine (Clear Creek County, Colo.)--1980-1990.; Control rooms--Colorado--Empire--1980-1990.; Interiors--Colorado--Empire--1980-1990.; Mining--Colorado--Empire--1980-1990. -
September 6, 1980
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