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Contour ploughing and strip cropping wheat fields just north of Great Falls, Montana

Contour ploughing and strip cropping wheat fields just north of Great ...

Public domain photograph of United States agriculture in the 1930s, country, farmer, farm, great depression, migration, dust bowl refugees, free to use, no copyright restrictions image - Picryl description

Contour ploughing and strip cropping of wheat fields just north of Great Falls, Montana

Contour ploughing and strip cropping of wheat fields just north of Gre...

Public domain photograph - Montana Folklife collection, ethnography, United States, free to use, no copyright restrictions image - Picryl description

Contour ploughing and strip cropping of wheat fields just north of Great Falls, Montana

Contour ploughing and strip cropping of wheat fields just north of Gre...

Picryl description: Public domain photograph of farming, farmer, agriculture, 20th-century, free to use, no copyright restrictions.

View of old contour mines in White Oak

View of old contour mines in White Oak

Event: Tour of Mountaintop Removal and Reclamation Sites from Seng Creek to White Oak.

A "wetland drainage complex" on a contour mining reclamation site

A "wetland drainage complex" on a contour mining reclamation site

Event: Tour of Reclamation Sites in White Oak and Surrounding Area. "Stacy Edmunds conducted a tour of sites she'd been using in her field study for her master's thesis in ecology. As she went, she explained th... More

Contour ploughing and strip cropping of wheat fields just north of Great Falls, Montana

Contour ploughing and strip cropping of wheat fields just north of Gre...

Public domain photograph of United States countryside, nature, during 1930s, free to use, no copyright restrictions image - Picryl description

Production. Airplane manufacture, general. This huge hand saw at the Inglewood, California, plant of North American Aviation, Incorporated, cuts a dozen sheets of metal to the proper contour at one time. This plant produces the battle-tested B-25 ("Billy Mitchell") bomber, used in General Doolittle's raid on Tokyo, and the P-51 ("Mustang") fighter plane, which was first brought into prominence by the British raid on Dieppe

Production. Airplane manufacture, general. This huge hand saw at the I...

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

Bridgeton, New Jersey. Seabrook Farms. Tractors ploughing on the contour

Bridgeton, New Jersey. Seabrook Farms. Tractors ploughing on the conto...

Picryl description: Public domain image of a tractor, farming equipment, agriculture, 20th century, free to use, no copyright restrictions.

Conversion. Soft drink dispenser plant. The president of an Eastern manufacturing company now producing war essentials on prime and subcontracts, checks a contour gauge manufactured for Army arsenals. Gauges for measuring cartridges and other war materials must be accurate to the 2/10,000 of an inch to meet ordnance specifications. Bristol and Martin Company, New York, New York

Conversion. Soft drink dispenser plant. The president of an Eastern ma...

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

Contour planting and listing. Monona County, Iowa

Contour planting and listing. Monona County, Iowa

Public domain photograph of United States countryside, nature, during 1930s, free to use, no copyright restrictions image - Picryl description

Contour ploughing and strip cropping of wheat fields just north of Great Falls, Montana

Contour ploughing and strip cropping of wheat fields just north of Gre...

Picryl description: Public domain photograph of farming, farmer, agriculture, 20th-century, free to use, no copyright restrictions.

Bridgeton, New Jersey. Seabrook Farms. Plowing on the contour

Bridgeton, New Jersey. Seabrook Farms. Plowing on the contour

Picryl description: Public domain photograph of farming, farmer, agriculture, 20th-century, free to use, no copyright restrictions.

Contour planting and listing. Monona County, Iowa

Contour planting and listing. Monona County, Iowa

Public domain photograph of United States agriculture in the 1930s, country, farmer, farm, great depression, migration, dust bowl refugees, free to use, no copyright restrictions image - Picryl description

M-10 tank destroyer. The M-10 "tank destroyer" is one of the Army's most effective weapons for land combat. It is a speedy, maneuverable land cruiser with great firepower. Notice the sloped contour of the hull and turret to deflect enemy shells. This destroyer, known as the M-10, is being produced in large numbers at the General Motors tank arsenal

M-10 tank destroyer. The M-10 "tank destroyer" is one of the Army's mo...

Picryl description: Public domain image of armored military vehicle, tank, free to use, no copyright restrictions.

Chinese water conservancy experts examining contour maps at the University of Maryland, where they are taking courses at the UNRRA (United Nations Relief and Rehabilitation Administration) training center. From left: Lin Ping-yi, Liu Chung-juci, Chang Jen, Hsu Shih-ta, Wu Yui-sin, Tsai Pang-lin, Chang Han-ying, and Tsai Chen

Chinese water conservancy experts examining contour maps at the Univer...

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

Old augur holes from  contour mining project

Old augur holes from contour mining project

Event: Tour of Mountaintop Removal and Reclamation Sites from Seng Creek to White Oak.

Mount Moriah, original contour - Public domain image. Dry plate negative.

Mount Moriah, original contour - Public domain image. Dry plate negati...

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

Contour plowing on mechanized farm of the Texas Panhandle

Contour plowing on mechanized farm of the Texas Panhandle

Picryl description: Public domain photograph of farming, farmer, agriculture, 20th-century, free to use, no copyright restrictions.

Contour ploughing and strip cropping wheat fields just north of Great Falls, Montana

Contour ploughing and strip cropping wheat fields just north of Great ...

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

Contour ploughing and strip cropping wheat fields just north of Great Falls, Montana

Contour ploughing and strip cropping wheat fields just north of Great ...

Public domain photograph of United States agriculture in the 1930s, country, farmer, farm, great depression, migration, dust bowl refugees, free to use, no copyright restrictions image - Picryl description

A "wetland drainage complex" on a contour mining reclamation site

A "wetland drainage complex" on a contour mining reclamation site

Event: Tour of Reclamation Sites in White Oak and Surrounding Area. "Stacy Edmunds conducted a tour of sites she'd been using in her field study for her master's thesis in ecology. As she went, she explained th... More

Contour ploughing and strip cropping of wheat fields just north of Great Falls, Montana

Contour ploughing and strip cropping of wheat fields just north of Gre...

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

Contour ploughing and strip cropping of wheat fields just north of Great Falls, Montana

Contour ploughing and strip cropping of wheat fields just north of Gre...

Public domain photograph of United States countryside, nature, during 1930s, free to use, no copyright restrictions image - Picryl description

Contour ploughing and strip cropping of wheat fields just north of Great Falls, Montana

Contour ploughing and strip cropping of wheat fields just north of Gre...

Public domain photograph of United States agriculture in the 1930s, country, farmer, farm, great depression, migration, dust bowl refugees, free to use, no copyright restrictions image - Picryl description

Contour ploughing and strip cropping wheat fields just north of Great Falls, Montana

Contour ploughing and strip cropping wheat fields just north of Great ...

Public domain photograph - Montana Folklife collection, ethnography, United States, free to use, no copyright restrictions image - Picryl description

Planting time. Contour plowing. Georgia

Planting time. Contour plowing. Georgia

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

Contour ploughing and strip cropping wheat fields just north of Great Falls, Montana

Contour ploughing and strip cropping wheat fields just north of Great ...

Public domain photograph - Montana Folklife collection, ethnography, United States, free to use, no copyright restrictions image - Picryl description

Production. Airplane manufacture, general. A skilled jig builder lines up a metal plate prior to cutting it to the correct contour. Employed at  the Inglewood, California, plant of North American Aviation, Incorporated. This plant produces the battle tested B-25 ("Billy Mitchell") bomber, used in General Doolittle's raid on Tokyo, and the P-51 ("Mustang") fighter plane, which was first brought into prominence by the British raid on Dieppe

Production. Airplane manufacture, general. A skilled jig builder lines...

Picryl description: Public domain image of a political campaign, politician, office meeting, 1930s, mid-20th-century United States, free to use, no copyright restrictions.

Solomon's Pools & ancient aqueducts. Closer view of forking of Wadi el-Biyar aqueduct, one to the right leading into lower pool, seen in the distance, the other going to the left following contour of the hill to the middle and upper pools

Solomon's Pools & ancient aqueducts. Closer view of forking of Wadi el...

Picryl description: Public domain image of a quarry, excavation or mining site, free to use, no copyright restrictions.

Contour ploughing and strip cropping of wheat fields just north of Great Falls, Montana

Contour ploughing and strip cropping of wheat fields just north of Gre...

Public domain photograph of United States agriculture in the 1930s, country, farmer, farm, great depression, migration, dust bowl refugees, free to use, no copyright restrictions image - Picryl description

A "highwall elimination complex," on a contour mining reclamation site

A "highwall elimination complex," on a contour mining reclamation site

Event: Tour of Reclamation Sites in White Oak and Surrounding Area. "Stacy Edmunds conducted a tour of sites she'd been using in her field study for her master's thesis in ecology. As she went, she explained th... More

Machinist milling the contour of a piston pin retainer for the Packard marine engine. Finished aluminum pistons are in the tray in the foreground. Packard marine engine plant, Detroit

Machinist milling the contour of a piston pin retainer for the Packard...

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

Contour ploughing and strip cropping of wheat fields just north of Great Falls, Montana

Contour ploughing and strip cropping of wheat fields just north of Gre...

Picryl description: Public domain photograph of farming, farmer, agriculture, 20th-century, free to use, no copyright restrictions.

Contour ploughing and strip cropping of wheat fields just north of Great Falls, Montana

Contour ploughing and strip cropping of wheat fields just north of Gre...

Public domain photograph - Montana Folklife collection, ethnography, United States, free to use, no copyright restrictions image - Picryl description

Farmyard in foreground showing general contour of country near Chicot, Arkansas

Farmyard in foreground showing general contour of country near Chicot,...

Picryl description: Public domain image of a rural countryside landscape, farmhouse, farm field, pasture free to use, no copyright restrictions.

Chinese water conservancy experts examining contour maps at the University of Maryland, where they are taking courses at the UNRRA (United Nations Relief and Rehabilitation Administration) training center

Chinese water conservancy experts examining contour maps at the Univer...

Picryl description: Public domain photograph of an office worker, 1930s, free to use, no copyright restrictions.

Contour ploughing and strip cropping of wheat fields just north of Great Falls, Montana

Contour ploughing and strip cropping of wheat fields just north of Gre...

Public domain photograph of United States agriculture in the 1930s, country, farmer, farm, great depression, migration, dust bowl refugees, free to use, no copyright restrictions image - Picryl description

FSA (Farm Security Administration) defense housing dormitories at Vallejo, California. Notice that the lower redwood siding conforms with the contour of the land. There were no excavations made for these buildings and when they have served their purpose they can be removed and leave the landscape in its original condition, that is, without unsightly excavations and pits

FSA (Farm Security Administration) defense housing dormitories at Vall...

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

Solomon's Pools & ancient aqueducts. Forking of Wadi el-Biyar aqueduct, one to the right leading into the lower pool, seen in the distance, the other going to the left following contour of the hill to the middle & upper pools.

Solomon's Pools & ancient aqueducts. Forking of Wadi el-Biyar aqueduct...

Public domain photograph of West Bank, Palestine, Israel, free to use, no copyright restrictions image - Picryl description

Contour plowing. Douglas County, Kansas

Contour plowing. Douglas County, Kansas

Picryl description: Public domain image of a rural landscape, farmhouse, pasture, farm field, free to use, no copyright restrictions.

Contour plowing on mechanized farms. Childress County, Texas Panhandle, Texas

Contour plowing on mechanized farms. Childress County, Texas Panhandle...

Picryl description: Public domain image of field, irrigation, agriculture, water, free to use, no copyright restrictions.

Contour ploughing and strip cropping of wheat fields just north of Great Falls, Montana

Contour ploughing and strip cropping of wheat fields just north of Gre...

Public domain photograph of United States agriculture in the 1930s, country, farmer, farm, great depression, migration, dust bowl refugees, free to use, no copyright restrictions image - Picryl description

A die maker. Dies are metal blocks with the pattern or contour of a part reproduced on their surface. They are used in presses or gorging hammers for forming identical metal parts

A die maker. Dies are metal blocks with the pattern or contour of a pa...

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.