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Flotation bag manufacturing. This maze of fabric represents various parts of flotation bags for military aircraft which, when finished, will be like the huge air container shown in background. Goodyear, Akron, Ohio

Flotation bag manufacturing. This maze of fabric represents various pa...

Public domain photograph of the 1930s-1940s World War Two, armed forces, military production, no copyright restrictions image - Picryl description

Anaconda smelter, Montana. Anaconda Copper Mining Company. Certain oils and organic chemical compounds form the reagents with which the finely ground sulphide ore mixed with water is agitated. This makes possible the phenomenon of flotation of the ore

Anaconda smelter, Montana. Anaconda Copper Mining Company. Certain oil...

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.

Anaconda smelter, Montana. Anaconda Copper Mining Company. Batteries of flotation machines where the ore is finally concentrated before smelting

Anaconda smelter, Montana. Anaconda Copper Mining Company. Batteries o...

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

Flotation bag manufacturing. There are as many types of flotation bags as there are types of planes. In this picture; small flotation bags for insertion in tips of wings of planes which must fly over water, are shown. These bags can be inflated quickly from compressed air cylinders to support planes forced down at seas. Goodyear, Akron, Ohio

Flotation bag manufacturing. There are as many types of flotation bags...

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

Anaconda smelter, Montana. Anaconda Copper Mining Company. Batteries of Hardinge ballmills in which the ore is reduced to the fineness of flour for the flotation process which immediately follows

Anaconda smelter, Montana. Anaconda Copper Mining Company. Batteries o...

Public domain image of an industrial building, factory, structure, works, 19th-20th century industrial revolution, free to use, no copyright restrictions - Picryl description

Flotation bag manufacturing. Women workers applying finishing touches to flotation bags used to support airplanes forced down at sea. Goodyear, Akron, Ohio

Flotation bag manufacturing. Women workers applying finishing touches ...

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

Anaconda smelter, Montana. Anaconda Copper Mining Company. Chemical control by means of titration is used in the flotation process

Anaconda smelter, Montana. Anaconda Copper Mining Company. Chemical co...

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

Anaconda smelter, Montana. Anaconda Copper Mining Company. Flotation machine in which particles of copper sulphide ore are attracted to the oily bubbles which retain the minerals by the process of adsorption; the ore floats and is skimmed off from the gangue, which remains submerged and it (the gangue) is waste material

Anaconda smelter, Montana. Anaconda Copper Mining Company. Flotation m...

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

Oliver filter at the Anaconda Copper Mining Company smelter. In this machine flotation concentrates are filtered from the liquid; from this operation the concentrates, which contain about twenty-six percent copper, go directly to the roasting furnace

Oliver filter at the Anaconda Copper Mining Company smelter. In this m...

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

Flotation bag manufacturing. Woman balloon room worker applying finishing touches to inflatable flotation bags used to float marine aircraft forced down at sea. Goodyear, Akron, Ohio

Flotation bag manufacturing. Woman balloon room worker applying finish...

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

Flotation bag manufacturing. Stack of flotation bags made of rubberized fabric inflated for test purposes, preparatory to deflation for insertion in wings of military airplanes. These bags are used to support planes forced down at sea. Goodyear, Akron, Ohio

Flotation bag manufacturing. Stack of flotation bags made of rubberize...

Public domain photograph of the 1930s-1940s World War Two, armed forces, military production, no copyright restrictions image - Picryl description

Anaconda smelter, Montana. Anaconda Copper Mining Company. Battery of Oliver filters. In these machines flotation concentrates are filtered from the liquid; from this operation the concentrates, which contain about twenty-six percent copper, go directly to the roasting furnace

Anaconda smelter, Montana. Anaconda Copper Mining Company. Battery of ...

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

Flotation bag manufacturing. Woman balloon room worker applying finishing touches to inflatable flotation bags used to float marine aircraft forced down at sea. Goodyear, Akron, Ohio

Flotation bag manufacturing. Woman balloon room worker applying finish...

Picryl description: Public domain image of an aircraft, assembly line, industrial facility, 1930s aviation, free to use, no copyright restrictions.

Flotation bag manufacture. Balloon room worker applies cement to airplane flotation bag in balloon room. This bag supports plane forced down at sea. Goodyear, Akron, Ohio

Flotation bag manufacture. Balloon room worker applies cement to airpl...

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

Anaconda smelter, Montana. Anaconda Copper Mining Company. Flotation machine in which particles of copper sulphide ore are attracted to the oily bubbles which retain the minerals by the process of adsorption; the ore floats and is skimmed off from the gangue, which remains submerged and it (the gangue) is waste material

Anaconda smelter, Montana. Anaconda Copper Mining Company. Flotation m...

Picryl description: Public domain image of food, dinner, grocery store, eating, 1930s, mid-20th-century United States, free to use, no copyright restrictions.

Flotation bag manufacture. Balloon room worker applies cement to airplane flotation bag in balloon room. This bag, easily inflated in a hurry, will help support planes forced down at sea. Goodyear, Akron, Ohio

Flotation bag manufacture. Balloon room worker applies cement to airpl...

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

Anaconda smelter, Montana. Anaconda Copper Mining Company. New and more efficient flotation machines have recently been installed

Anaconda smelter, Montana. Anaconda Copper Mining Company. New and mor...

Picryl description: Public domain image of an aircraft, assembly line, industrial facility, 1930s aviation, free to use, no copyright restrictions.

Flotation bag manufacturing. Spherical flotation bag used in a famous American bombing plane for protection in event of crash landing at sea. Bags are carried, deflated, in wings and fuselage and may be inflated almost instantly with compressed air contained in cylinders. Goodyear, Akron, Ohio

Flotation bag manufacturing. Spherical flotation bag used in a famous ...

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