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Tank manufacture (Chrysler). Twelve of these bell type carburizing furnaces are in twenty-four hour operation at the huge Chrysler tank arsenal in Detroit. They are employed to barburize final drive gears, transmission parts and other parts of the twenty-eight ton M-3 tanks in production there

Tank manufacture (Chrysler). Twelve of these bell type carburizing fur...

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

Watts Bar Dam, Tennessee (Tennessee Valley Authority (TVA)). Transmission lines

Watts Bar Dam, Tennessee (Tennessee Valley Authority (TVA)). Transmiss...

Public domain photograph of indoor, interior activity, America in the 1930s, free to use, no copyright restrictions image - Picryl description

Fort Knox. Negro mechanics. Transmission job on an army truck at Fort Knox, Kentucky. This Negro soldier, who serves as truck driver and mechanic, plays an important part in keeping the army's transport fleets in service

Fort Knox. Negro mechanics. Transmission job on an army truck at Fort ...

Picryl description: Public domain image of an automobile, 1940s car, free to use, no copyright restrictions.

Watts Bar Dam, Tennessee. Tennessee Valley Authority. Transmission towers

Watts Bar Dam, Tennessee. Tennessee Valley Authority. Transmission tow...

Picryl description: Public domain photograph of a dock, harbor, boats, water, free to use, no copyright restrictions.

Las Vegas, Nevada. A mass of transmission towers and transformers redistributing power from Boulder Dam to Basic Magnesium Incorporated, which produces huge quantities of the lightest of all metals for aircraft and other wartime manufacturing

Las Vegas, Nevada. A mass of transmission towers and transformers redi...

Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.

Hoover Dam, Henderson-Mead Transmission Line 2, Spanning Colorado River at Route 93, Boulder City, Clark County, NV

Hoover Dam, Henderson-Mead Transmission Line 2, Spanning Colorado Rive...

STORED OFF SITE AND ON SITE. mchr Significance: Previously known as a segment of the Davis-Hoover and the Hoover-Mead Transmission Lines, the documented segment of the Henderson-Mead Transmission Line 2 was con... More

[Diagram of interferometer and four mirrors mounted on stone floating in mercury, which disproved existence of luminiferous ether and its role in the transmission of eletromagnetic waves; with surrounding text]

[Diagram of interferometer and four mirrors mounted on stone floating ...

Illus. and text in: On the relative motion of the earth and the luminous aether / Albert A. Michelson and Edward W. Morley. In Philosophical magazine, 5th ser., vol. 24, Dec. 1887, p. 454. Published in: The tra... More

Fort Knox. Negro mechanics. Transmission job on an army truck at Fort Knox, Kentucky. This Negro soldier, who serves as truck driver and mechanic, plays an important part in keeping the army's transport fleets in service

Fort Knox. Negro mechanics. Transmission job on an army truck at Fort ...

Picryl description: Public domain image of a pilot, aviator, aircraft, free to use, no copyright restrictions.

Tennessee Valley Authority. Transmission line towers and high-tension lines that carry current generated at the TVA's hydroelectric plant at Wilson Dam. Located near Sheffield, Alabama, 260 miles above the mouth of the Tennessee River, the dam has an authorized power installation of 288,000 kilowatts, which can be increased to a possible ultimate of 444,000 kilowatts. The reservoir at the dam adds 377,000 acre-feet of water to controlled storage on the Tennessee River system

Tennessee Valley Authority. Transmission line towers and high-tension ...

Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.

Las Vegas, Nevada. Transmission towers and transformers redistributing power from Boulder Dam to Basic Magnesium Incorporated, which produces huge quantities of the lightest of all metals for aircraft and other wartime manufacturing

Las Vegas, Nevada. Transmission towers and transformers redistributing...

Picryl description: Public domain image of a construction site, industrial or commercial building, free to use, no copyright restrictions.

Washington, D.C. Preparing an advisory forecast at the U.S. Weather Bureau. Weather forecasts data are put on coding tape to transmission to various centers for dissemination and use in war activities

Washington, D.C. Preparing an advisory forecast at the U.S. Weather Bu...

Picryl description: Public domain historical photo of Washington DC during the First World War, free to use, no copyright restrictions image.

Morony Hydroelectric Facility, Morony-to-Rainbow 100 kV Transmission Line, West bank of the Missouri River, Great Falls, Cascade County, MT

Morony Hydroelectric Facility, Morony-to-Rainbow 100 kV Transmission L...

Significance: The transmission line played an integral role in the growth of Montana's electrical and mining industries in the first half of the twentieth century. Its construction enabled the transmission of h... More

Ryan Hydroelectric Facility, Ryan-to-Rainbow 100 kV Transmission Line, West bank of Missouri River, northeast of Great Falls, Great Falls, Cascade County, MT

Ryan Hydroelectric Facility, Ryan-to-Rainbow 100 kV Transmission Line,...

Significance: The transmission line is an early and well preserved example of an important innovation in electric power transmission line technology, the H-frame support structure. Comprised of two-wood poles c... More

Ryan Hydroelectric Facility, Ryan-to-Rainbow 100 kV Transmission Line, West bank of Missouri River, northeast of Great Falls, Great Falls, Cascade County, MT

Ryan Hydroelectric Facility, Ryan-to-Rainbow 100 kV Transmission Line,...

Significance: The transmission line is an early and well preserved example of an important innovation in electric power transmission line technology, the H-frame support structure. Comprised of two-wood poles c... More

Ryan Hydroelectric Facility, Ryan-to-Rainbow 100 kV Transmission Line, West bank of Missouri River, northeast of Great Falls, Great Falls, Cascade County, MT

Ryan Hydroelectric Facility, Ryan-to-Rainbow 100 kV Transmission Line,...

Significance: The transmission line is an early and well preserved example of an important innovation in electric power transmission line technology, the H-frame support structure. Comprised of two-wood poles c... More

Pasco-Kennewick Transmission Line, Columbia River Crossing Towers, Columbia Drive & Gum Street, Kennewick, Benton County, WA

Pasco-Kennewick Transmission Line, Columbia River Crossing Towers, Col...

Significance: The three electrical transmission line towers between Pasco Kennewick are the earliest known effort to span the Columbia River, by aerial means, with electrical lines strung between steel frame to... More

Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Along West Rosebud Creek, Fishtail, Stillwater County, MT

Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Alon...

Survey number: HAER MT-130-A Building/structure dates: 1923 Initial Construction

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, Montana, Great Falls, Cascade County, MT

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, M...

Significance: The Transmission Line is significant as a contributing element of the Fort Peck Town Site and Dam Multiple Resource Property. It maintains its integrity and is directly associated with the constru... More

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, Montana, Great Falls, Cascade County, MT

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, M...

Significance: The Transmission Line is significant as a contributing element of the Fort Peck Town Site and Dam Multiple Resource Property. It maintains its integrity and is directly associated with the constru... More

Conowingo Hydroelectric Plant. Corona rings and choke coils on transmission line connecting superstructure

Conowingo Hydroelectric Plant. Corona rings and choke coils on transmi...

Picryl description: Public domain image of a hydroelectric dam, industrial facility, power generation, water cascade, free to use, no copyright restrictions.

Wheeler Dam, Alabama (Tennessee Valley Authority (TVA)). Transmission towers

Wheeler Dam, Alabama (Tennessee Valley Authority (TVA)). Transmission ...

Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.

Fort Knox. Electric power line construction. The electrical industry of America relies largely on the "broadback" or lineman, to bring its power to the places where it is needed. This man is working on the construction of a transmission line to Fort Knox, Kentucky, where American soldiers are training for the battles of democracy

Fort Knox. Electric power line construction. The electrical industry o...

Picryl description: Public domain image of a farmer, 1930s, 20th-century dust bowl era, free to use, no copyright restrictions.

Morony Hydroelectric Facility, Morony-to-Rainbow 100 kV Transmission Line, West bank of the Missouri River, Great Falls, Cascade County, MT

Morony Hydroelectric Facility, Morony-to-Rainbow 100 kV Transmission L...

Significance: The transmission line played an integral role in the growth of Montana's electrical and mining industries in the first half of the twentieth century. Its construction enabled the transmission of h... More

Ryan Hydroelectric Facility, Ryan-to-Rainbow 100 kV Transmission Line, West bank of Missouri River, northeast of Great Falls, Great Falls, Cascade County, MT

Ryan Hydroelectric Facility, Ryan-to-Rainbow 100 kV Transmission Line,...

Significance: The transmission line is an early and well preserved example of an important innovation in electric power transmission line technology, the H-frame support structure. Comprised of two-wood poles c... More

Pasco-Kennewick Transmission Line, Columbia River Crossing Towers, Columbia Drive & Gum Street, Kennewick, Benton County, WA

Pasco-Kennewick Transmission Line, Columbia River Crossing Towers, Col...

Significance: The three electrical transmission line towers between Pasco Kennewick are the earliest known effort to span the Columbia River, by aerial means, with electrical lines strung between steel frame to... More

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, Montana, Great Falls, Cascade County, MT

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, M...

Significance: The Transmission Line is significant as a contributing element of the Fort Peck Town Site and Dam Multiple Resource Property. It maintains its integrity and is directly associated with the constru... More

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, Montana, Great Falls, Cascade County, MT

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, M...

Significance: The Transmission Line is significant as a contributing element of the Fort Peck Town Site and Dam Multiple Resource Property. It maintains its integrity and is directly associated with the constru... More

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, Montana, Great Falls, Cascade County, MT

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, M...

Significance: The Transmission Line is significant as a contributing element of the Fort Peck Town Site and Dam Multiple Resource Property. It maintains its integrity and is directly associated with the constru... More

A Veteran Inventor. About 6 miles from Washington, on the edge of the little hamlet of Hyattsville, Md., may be found Dr. James Harris Rogers, wizard inventor, now 80 years old, retired from his work but still erect and energetic It was Dr. Rogers, who during the war proved that water as well as earth and air is a medium for the transmission of electro-magnetic waves. Through the "well" located on his property, high officials heard German official reports

A Veteran Inventor. About 6 miles from Washington, on the edge of the ...

Public domain photograph of people in office, interior, the 1910s-1920s America, free to use, no copyright restrictions image - Picryl description

Insulators and transmission wires in the switchyard of the TVA's Chickamauga Dam, located near Chattanooga, 471 miles above the mouth of the Tennessee River. The [dam] has an authorized power installation of 81,000 kw. The reservoir at the dam adds 377,000 acre-feet of water to controlled storage on the Tenn. River system. The power that passes through this switchyard serves many useful domestic, agricultural and industrial uses.

Insulators and transmission wires in the switchyard of the TVA's Chick...

Picryl description: Public domain image of a park, trees, outdoors, free to use, no copyright restrictions.

Subcontracting (Wilbarger and Sons). Workers at the shop of Wilbarger and Sons, Harrisonburg, Virginia, are doing away with the overhead belt system of operating their machines. Delays are too frequent and they will not brook delays in war production. The machines are being converted to direct gear transmission

Subcontracting (Wilbarger and Sons). Workers at the shop of Wilbarger ...

Picryl description: Public domain photograph of a machine, worker, factory, industrial equipment, free to use, no copyright restrictions.

Las Vegas, Nevada. A mass of transmission towers and transformers redistributing power from Boulder Dam to Basic Magnesium Incorporated, which produces huge quantities of the lightest of all metals for aircraft and other wartime manufacturing

Las Vegas, Nevada. A mass of transmission towers and transformers redi...

Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.

Power and conservation. Chickamauga Dam, Tennessee Valley Authority. Insulators and transmission wires in the switchyard of the TVA's Chickamauga Dam, located near Chattanooga, 471 miles above the mouth of the Tennessee River. The dam has an authorized power installation of 81,000 kilowatts. The reservoir at the dam adds 377,000 acre feet of water to controlled storage on the Tennessee River system. The power that passes through this switchyard serves many useful domestic, agricultural and industrial uses

Power and conservation. Chickamauga Dam, Tennessee Valley Authority. I...

Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.

Fort Knox. Electric power line construction. The electrical industry of America relies largely on the "broadback" or lineman, to bring its power to the places where it is needed. This man is working on the construction of a transmission line to Fort Knox, Kentucky, where American soldiers are training for the battles of democracy

Fort Knox. Electric power line construction. The electrical industry o...

Picryl description: Public domain image of a worker, labor, factory, plant, manufacture, industrial facility, 1930s, mid-20th-century industrial photo, free to use, no copyright restrictions.

Hoover Dam, Henderson-Mead Transmission Line 2, Spanning Colorado River at Route 93, Boulder City, Clark County, NV

Hoover Dam, Henderson-Mead Transmission Line 2, Spanning Colorado Rive...

STORED OFF SITE AND ON SITE. mchr Significance: Previously known as a segment of the Davis-Hoover and the Hoover-Mead Transmission Lines, the documented segment of the Henderson-Mead Transmission Line 2 was con... More

Ryan Hydroelectric Facility, Ryan-to-Rainbow 100 kV Transmission Line, West bank of Missouri River, northeast of Great Falls, Great Falls, Cascade County, MT

Ryan Hydroelectric Facility, Ryan-to-Rainbow 100 kV Transmission Line,...

Significance: The transmission line is an early and well preserved example of an important innovation in electric power transmission line technology, the H-frame support structure. Comprised of two-wood poles c... More

Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Along West Rosebud Creek, Fishtail, Stillwater County, MT

Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Alon...

Survey number: HAER MT-130-A Building/structure dates: 1923 Initial Construction

Santa Ana River Hydroelectric System, Transmission Lines, Redlands, San Bernardino County, CA

Santa Ana River Hydroelectric System, Transmission Lines, Redlands, Sa...

Survey number: HAER CA-130-X Building/structure dates: 1898 Initial Construction Building/structure dates: 1905 Subsequent Work Building/structure dates: 1904 Subsequent Work

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, Montana, Great Falls, Cascade County, MT

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, M...

Significance: The Transmission Line is significant as a contributing element of the Fort Peck Town Site and Dam Multiple Resource Property. It maintains its integrity and is directly associated with the constru... More

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, Montana, Great Falls, Cascade County, MT

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, M...

Significance: The Transmission Line is significant as a contributing element of the Fort Peck Town Site and Dam Multiple Resource Property. It maintains its integrity and is directly associated with the constru... More

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, Montana, Great Falls, Cascade County, MT

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, M...

Significance: The Transmission Line is significant as a contributing element of the Fort Peck Town Site and Dam Multiple Resource Property. It maintains its integrity and is directly associated with the constru... More

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, Montana, Great Falls, Cascade County, MT

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, M...

Significance: The Transmission Line is significant as a contributing element of the Fort Peck Town Site and Dam Multiple Resource Property. It maintains its integrity and is directly associated with the constru... More

Radio relay transmission record General Saltsmann & Corp. H.L. Clark, 11/30/25

Radio relay transmission record General Saltsmann & Corp. H.L. Clark, ...

Picryl description: Public domain image of a bureau, office furniture, desk, chair, free to use, no copyright restrictions.

Subcontracting (Wilbarger and Sons). Workers at the shop of Wilbarger and Sons, Harrisonburg, Virginia, are doing away with the overhead belt system of operating their machines. Delays are too frequent and they will not brook delays in war production. The machines are being converted to direct gear transmission

Subcontracting (Wilbarger and Sons). Workers at the shop of Wilbarger ...

Public domain photograph of a shop, shopping, free to use, no copyright restrictions image - Picryl description

Tennessee Valley Authority. Transmission line towers and high-tension lines that carry current generated at the TVA's hydroelectric plant at Wilson Dam. Located near Sheffield, Alabama, 260 miles above the mouth of the Tennessee River, the dam has an authorized power installation of 288,000 kilowatts, which can be increased to a possible ultimate of 444,000 kilowatts. The reservoir at the dam adds 377,000 acre-feet of water to controlled storage on the Tennessee River system

Tennessee Valley Authority. Transmission line towers and high-tension ...

Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.

Procession of electrical transmission towers in Van Zandt County in northeast Texas

Procession of electrical transmission towers in Van Zandt County in no...

Title, date and keywords based on information provided by the photographer. Credit line: The Lyda Hill Texas Collection of Photographs in Carol M. Highsmith's America Project, Library of Congress, Prints and Ph... More

Ryan Hydroelectric Facility, Ryan-to-Rainbow 100 kV Transmission Line, West bank of Missouri River, northeast of Great Falls, Great Falls, Cascade County, MT

Ryan Hydroelectric Facility, Ryan-to-Rainbow 100 kV Transmission Line,...

Significance: The transmission line is an early and well preserved example of an important innovation in electric power transmission line technology, the H-frame support structure. Comprised of two-wood poles c... More

Ryan Hydroelectric Facility, Ryan-to-Rainbow 100 kV Transmission Line, West bank of Missouri River, northeast of Great Falls, Great Falls, Cascade County, MT

Ryan Hydroelectric Facility, Ryan-to-Rainbow 100 kV Transmission Line,...

Significance: The transmission line is an early and well preserved example of an important innovation in electric power transmission line technology, the H-frame support structure. Comprised of two-wood poles c... More

Tennessee Valley Authority. Transmission line towers and high-tension lines that carry current generated at the TVA's hydroelectric plant at Wilson Dam. Located near Sheffield, Alabama, 260 miles above the mouth of the Tennessee River, the dam has an authorized power installation of 288,000 kilowatts, which can be increased to a possible ultimate of 444,000 kilowatts. The reservoir at the dam adds 377,000 acre-feet of water to controlled storage on the Tennessee River system

Tennessee Valley Authority. Transmission line towers and high-tension ...

Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.

Fort Knox. Electric power line construction. The electrical industry of America relies largely on the "broadback" or lineman, to bring its power to the places where it is needed. This man is working on the construction of a transmission line to Fort Knox, Kentucky, where American soldiers are training for the battles of democracy

Fort Knox. Electric power line construction. The electrical industry o...

Picryl description: Public domain image of a farmer, 1930s, 20th-century dust bowl era, free to use, no copyright restrictions.

Production. Magnesium. A veritable forest of transmission towers and transformers distribute electrical power to the various units of Basic Magnesium's huge plant in the southern Nevada desert. Some units of this plant are now producing magnesium, lightest of all metals, for incendiary bombs, tracer bullets and aircraft parts. Full production is scheduled for the summer of 1943

Production. Magnesium. A veritable forest of transmission towers and t...

Picryl description: Public domain image of a power station, dam, electric generator, industrial building, free to use, no copyright restrictions.

Office of War Information News Bureau. Elmer Roessner, chief of the general news desk, talks over a news release with Sutherland Denlinger. The chief of the general news desk keep an eye on all the news that goes out of the news bureau to the seventy- five correspondents in the Office of War Information's Washington press room, to all specialized news media, and to the New York and San Francisco offices of OWI where it is prepared for shortwave radio broadcasts and cable transmission overseas

Office of War Information News Bureau. Elmer Roessner, chief of the ge...

Picryl description: Public domain historical photo of Washington DC during the First World War, free to use, no copyright restrictions image.

Pasco-Kennewick Transmission Line, Columbia River Crossing Towers, Columbia Drive & Gum Street, Kennewick, Benton County, WA

Pasco-Kennewick Transmission Line, Columbia River Crossing Towers, Col...

Significance: The three electrical transmission line towers between Pasco Kennewick are the earliest known effort to span the Columbia River, by aerial means, with electrical lines strung between steel frame to... More

Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Along West Rosebud Creek, Fishtail, Stillwater County, MT

Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Alon...

Survey number: HAER MT-130-A Building/structure dates: 1923 Initial Construction

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, Montana, Great Falls, Cascade County, MT

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, M...

Significance: The Transmission Line is significant as a contributing element of the Fort Peck Town Site and Dam Multiple Resource Property. It maintains its integrity and is directly associated with the constru... More

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, Montana, Great Falls, Cascade County, MT

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, M...

Significance: The Transmission Line is significant as a contributing element of the Fort Peck Town Site and Dam Multiple Resource Property. It maintains its integrity and is directly associated with the constru... More

Safety device for blind landing of air-track. Washington D.C. The monitoring device of the air-track blind landing in the above photo tells the man on the ground if all the beams are being sent out correctly if there is any error in transmission of the beams this machine will pick It up immediately and the pilot can be notified to come into the airdrome again while corrections can be made

Safety device for blind landing of air-track. Washington D.C. The moni...

Public domain photograph of people in office, interior, the 1910s-1920s America, free to use, no copyright restrictions image - Picryl description

Fort Knox. Electric power line construction. The electrical industry of America relies largely on the "broadback" or lineman, to bring its power to the places where it is needed. This man is working on the construction of a transmission line to Fort Knox, Kentucky, where American soldiers are training for the battles of democracy

Fort Knox. Electric power line construction. The electrical industry o...

Picryl description: Public domain vintage artistic photograph, free to use, no copyright restrictions image.

Las Vegas, Nevada. A crossroad sign reading "Victory Road," with buildings, storage silos and transmission lines of the Basic Magnesium Incorporated plant in the background

Las Vegas, Nevada. A crossroad sign reading "Victory Road," with build...

Public domain photograph - historical image of Nevada, United States, free to use, no copyright restrictions image - Picryl description

Watts Bar Dam, Tennessee (Tennessee Valley Authority (TVA)). Transmission lines

Watts Bar Dam, Tennessee (Tennessee Valley Authority (TVA)). Transmiss...

Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.

Tennessee Valley Authority. Transmission line towers and high-tension lines that carry current generated at the TVA's hydroelectric plant at Wilson Dam. Located near Sheffield, Alabama, 260 miles above the mouth of the Tennessee River, the dam has an authorized power installation of 288,000 kilowatts, which can be increased to a possible ultimate of 444,000 kilowatts. The reservoir at the dam adds 377,000 acre-feet of water to controlled storage on the Tennessee River system

Tennessee Valley Authority. Transmission line towers and high-tension ...

Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.

Washington, D.C. Preparing an advisory forecast at the U.S. Weather Bureau. Transmission of weather data by teletype to military and civilian war centers

Washington, D.C. Preparing an advisory forecast at the U.S. Weather Bu...

Picryl description: Public domain historical photo of Washington DC during the First World War, free to use, no copyright restrictions image.

Morony Hydroelectric Facility, Morony-to-Rainbow 100 kV Transmission Line, West bank of the Missouri River, Great Falls, Cascade County, MT

Morony Hydroelectric Facility, Morony-to-Rainbow 100 kV Transmission L...

Significance: The transmission line played an integral role in the growth of Montana's electrical and mining industries in the first half of the twentieth century. Its construction enabled the transmission of h... More

Ryan Hydroelectric Facility, Ryan-to-Rainbow 100 kV Transmission Line, West bank of Missouri River, northeast of Great Falls, Great Falls, Cascade County, MT

Ryan Hydroelectric Facility, Ryan-to-Rainbow 100 kV Transmission Line,...

Significance: The transmission line is an early and well preserved example of an important innovation in electric power transmission line technology, the H-frame support structure. Comprised of two-wood poles c... More

Pasco-Kennewick Transmission Line, Columbia River Crossing Towers, Columbia Drive & Gum Street, Kennewick, Benton County, WA

Pasco-Kennewick Transmission Line, Columbia River Crossing Towers, Col...

Significance: The three electrical transmission line towers between Pasco Kennewick are the earliest known effort to span the Columbia River, by aerial means, with electrical lines strung between steel frame to... More

Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Along West Rosebud Creek, Fishtail, Stillwater County, MT

Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Alon...

Survey number: HAER MT-130-A Building/structure dates: 1923 Initial Construction

Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Along West Rosebud Creek, Fishtail, Stillwater County, MT

Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Alon...

Survey number: HAER MT-130-A Building/structure dates: 1923 Initial Construction

Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Along West Rosebud Creek, Fishtail, Stillwater County, MT

Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Alon...

Survey number: HAER MT-130-A Building/structure dates: 1923 Initial Construction

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, Montana, Great Falls, Cascade County, MT

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, M...

Significance: The Transmission Line is significant as a contributing element of the Fort Peck Town Site and Dam Multiple Resource Property. It maintains its integrity and is directly associated with the constru... More

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, Montana, Great Falls, Cascade County, MT

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, M...

Significance: The Transmission Line is significant as a contributing element of the Fort Peck Town Site and Dam Multiple Resource Property. It maintains its integrity and is directly associated with the constru... More

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, Montana, Great Falls, Cascade County, MT

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, M...

Significance: The Transmission Line is significant as a contributing element of the Fort Peck Town Site and Dam Multiple Resource Property. It maintains its integrity and is directly associated with the constru... More

Norris Dam, Tennessee. Tennessee Valley Authority. Transmission tower

Norris Dam, Tennessee. Tennessee Valley Authority. Transmission tower

Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.

Power and conservation. Chickamauga Dam, Tennessee Valley Authority (TVA). The new 154,000 volt transmission line running from the TVA's Chickamauga Dam. The dam, located near Chattanooga, 471 miles above the mouth of the Tennessee River, has an authorized power installation of 81,000 kilowatts, which can be increased to a possible ultimate of 108,000 kilowatts. The reservoir at the dam adds 377,000 acre feet of water to controlled storage on the Tennessee River system. The power that travels along this line serves many useful domestic, agricultural and industrial uses

Power and conservation. Chickamauga Dam, Tennessee Valley Authority (T...

Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.

Las Vegas, Nevada. A view from a watchtower, showing the Basic Magnesium Incorporated plant, its 1,000 unit housing development, transmission lines and roads

Las Vegas, Nevada. A view from a watchtower, showing the Basic Magnesi...

Public domain photograph - historical image of Nevada, United States, free to use, no copyright restrictions image - Picryl description

Morony Hydroelectric Facility, Morony-to-Rainbow 100 kV Transmission Line, West bank of the Missouri River, Great Falls, Cascade County, MT

Morony Hydroelectric Facility, Morony-to-Rainbow 100 kV Transmission L...

Significance: The transmission line played an integral role in the growth of Montana's electrical and mining industries in the first half of the twentieth century. Its construction enabled the transmission of h... More

Morony Hydroelectric Facility, Morony-to-Rainbow 100 kV Transmission Line, West bank of the Missouri River, Great Falls, Cascade County, MT

Morony Hydroelectric Facility, Morony-to-Rainbow 100 kV Transmission L...

Significance: The transmission line played an integral role in the growth of Montana's electrical and mining industries in the first half of the twentieth century. Its construction enabled the transmission of h... More

Morony Hydroelectric Facility, Morony-to-Rainbow 100 kV Transmission Line, West bank of the Missouri River, Great Falls, Cascade County, MT

Morony Hydroelectric Facility, Morony-to-Rainbow 100 kV Transmission L...

Significance: The transmission line played an integral role in the growth of Montana's electrical and mining industries in the first half of the twentieth century. Its construction enabled the transmission of h... More

Morony Hydroelectric Facility, Morony-to-Rainbow 100 kV Transmission Line, West bank of the Missouri River, Great Falls, Cascade County, MT

Morony Hydroelectric Facility, Morony-to-Rainbow 100 kV Transmission L...

Significance: The transmission line played an integral role in the growth of Montana's electrical and mining industries in the first half of the twentieth century. Its construction enabled the transmission of h... More

Hoover Dam, Henderson-Mead Transmission Line 2, Spanning Colorado River at Route 93, Boulder City, Clark County, NV

Hoover Dam, Henderson-Mead Transmission Line 2, Spanning Colorado Rive...

STORED OFF SITE AND ON SITE. mchr Significance: Previously known as a segment of the Davis-Hoover and the Hoover-Mead Transmission Lines, the documented segment of the Henderson-Mead Transmission Line 2 was con... More

Pasco-Kennewick Transmission Line, Columbia River Crossing Towers, Columbia Drive & Gum Street, Kennewick, Benton County, WA

Pasco-Kennewick Transmission Line, Columbia River Crossing Towers, Col...

Significance: The three electrical transmission line towers between Pasco Kennewick are the earliest known effort to span the Columbia River, by aerial means, with electrical lines strung between steel frame to... More

Pasco-Kennewick Transmission Line, Columbia River Crossing Towers, Columbia Drive & Gum Street, Kennewick, Benton County, WA

Pasco-Kennewick Transmission Line, Columbia River Crossing Towers, Col...

Significance: The three electrical transmission line towers between Pasco Kennewick are the earliest known effort to span the Columbia River, by aerial means, with electrical lines strung between steel frame to... More

Wilson Dam & Hydroelectric Plant, Oilostatic Transmission System, Spanning Tennessee River at Wilson Dam Road (Route 133), Muscle Shoals, Colbert County, AL

Wilson Dam & Hydroelectric Plant, Oilostatic Transmission System, Span...

Significance: As generating capacity at Wilson Dam grew through the early TVA years, new methods of generator cable installation came into practice. One of these new cable installations, the Oilostatic System,... More

Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Along West Rosebud Creek, Fishtail, Stillwater County, MT

Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Alon...

Survey number: HAER MT-130-A Building/structure dates: 1923 Initial Construction

Santa Ana River Hydroelectric System, Transmission Lines, Redlands, San Bernardino County, CA

Santa Ana River Hydroelectric System, Transmission Lines, Redlands, Sa...

Survey number: HAER CA-130-X Building/structure dates: 1898 Initial Construction Building/structure dates: 1905 Subsequent Work Building/structure dates: 1904 Subsequent Work

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, Montana, Great Falls, Cascade County, MT

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, M...

Significance: The Transmission Line is significant as a contributing element of the Fort Peck Town Site and Dam Multiple Resource Property. It maintains its integrity and is directly associated with the constru... More

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, Montana, Great Falls, Cascade County, MT

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, M...

Significance: The Transmission Line is significant as a contributing element of the Fort Peck Town Site and Dam Multiple Resource Property. It maintains its integrity and is directly associated with the constru... More

Transmission line towers and high tension lines that carry current generated at TVA's Wilson Dam hydroelectric plant, near Sheffield, Ala.

Transmission line towers and high tension lines that carry current gen...

Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.

Las Vegas, Nevada. A mass of transmission towers and transformers redistributing power from Boulder Dam to Basic Magnesium Incorporated, which produces huge quantities of the lightest of all metals for aircraft and other wartime manufacturing

Las Vegas, Nevada. A mass of transmission towers and transformers redi...

Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.

Power and conservation. Chickamauga Dam, Tennessee Valley Authority. Insulators and transmission wires in the switchyard of the TVA's Chickamauga Dam, located near Chattanooga, 471 miles above the mouth of the Tennessee River. The dam has an authorized power installation of 81,000 kilowatts. The reservoir at the dam adds 377,000 acre feet of water to controlled storage on the Tennessee River system. The power that passes through this switchyard serves many useful domestic, agricultural and industrial uses

Power and conservation. Chickamauga Dam, Tennessee Valley Authority. I...

Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.

Watts Bar Dam, Tennessee (Tennessee Valley Authority (TVA)). Transmission lines

Watts Bar Dam, Tennessee (Tennessee Valley Authority (TVA)). Transmiss...

Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.

Las Vegas, Nevada. A mass of transmission towers and transformers redistributing power from Boulder Dam to Basic Magnesium Incorporated, which produces huge quantities of the lightest of all metals for aircraft and other wartime manufacturing

Las Vegas, Nevada. A mass of transmission towers and transformers redi...

Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.

Santa Ana River Hydroelectric System, Transmission Lines, Redlands, San Bernardino County, CA

Santa Ana River Hydroelectric System, Transmission Lines, Redlands, Sa...

Survey number: HAER CA-130-X Building/structure dates: 1898 Initial Construction Building/structure dates: 1905 Subsequent Work Building/structure dates: 1904 Subsequent Work

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, Montana, Great Falls, Cascade County, MT

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, M...

Significance: The Transmission Line is significant as a contributing element of the Fort Peck Town Site and Dam Multiple Resource Property. It maintains its integrity and is directly associated with the constru... More

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, Montana, Great Falls, Cascade County, MT

Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, M...

Significance: The Transmission Line is significant as a contributing element of the Fort Peck Town Site and Dam Multiple Resource Property. It maintains its integrity and is directly associated with the constru... More

General planning. This photograph is included in the series as a vivid document on the impingement of Twentieth Century technology upon the neglected and backward rural scene. The meter on the wall of the rural shack indicates that it now receives its share of electricity from the power carried overland by the huge TVA (Tennessee Valley Authority) transmission line. TVA program must resolve the conflict between between modern and ancient ways of life so that individuals, similar to those which are shown in the picture, will be benefited

General planning. This photograph is included in the series as a vivid...

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

Transmission towers in the switchyard of TVA's Chickamauga Dam, near Chattanooga, Tenn.

Transmission towers in the switchyard of TVA's Chickamauga Dam, near C...

Picryl description: Public domain image of a historical building, landmark architecture, world heritage, free to use, no copyright restrictions.

Transmission towers in the switchyard of TVA's Chickamauga Dam, near Chattanooga, Tenn.

Transmission towers in the switchyard of TVA's Chickamauga Dam, near C...

Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.

Subcontracting (Wilbarger and Sons). Electrically driven transmission gears have speeded up production at the small Wilbarger and Sons Shop, in Harrisonburg, Virginia. Workers at the shop installed the gears and transmission of an old Ford coupe on this machine and the results have been more than gratifying

Subcontracting (Wilbarger and Sons). Electrically driven transmission ...

Picryl description: Public domain image of a worker, labor, factory, plant, manufacture, industrial facility, 1930s, mid-20th-century industrial photo, free to use, no copyright restrictions.

Power and conservation. Chickamauga Dam, Tennessee Valley Authority (TVA). Generator hall of the powerhouse at the TVA's Chickamauga Dam. The dam, located near Chattanooga, 471 miles above the mouth of the Tennessee River, has an authorized power installation of 81,000 kilowatts, which can be increased to a possible ultimate of 108,000 kilowatts. The reservoir at the dam adds 377,000 acre feet of water to controlled storage on the Tennessee River system. The power that goes out over its 154,000 volt transmission line serves many useful domestic, agricultural and industrial uses

Power and conservation. Chickamauga Dam, Tennessee Valley Authority (T...

Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.

Norris Dam, Tennessee. Tennessee Valley Authority (TVA). Transmission tower

Norris Dam, Tennessee. Tennessee Valley Authority (TVA). Transmission ...

Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.

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