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Anaconda smelter, Montana. Anaconda Copper Mining Company. Smokestack, which is the largest in the world: 585 feet in height with a diameter at base of seventy-five feet and at top of sixty feet. Flue gases are discharged at the rate of three to four million cubic feet per minute. The arsenic plant is seen at the base of the stack

Anaconda smelter, Montana. Anaconda Copper Mining Company. Smokestack,...

Picryl description: Public domain image of a tower, column, chimney, free to use, no copyright restrictions.

Aluminum. Reynolds Metal Company, Louisville, Kentucky. Rolled "strong alloy" aluminum rod stock as it comes from the rolling mill. This stock has been reduced to 1 3/8" in diameter

Aluminum. Reynolds Metal Company, Louisville, Kentucky. Rolled "strong...

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

Philadelphia, Pennsylvania. Stator frame of the 30,000 kilowatt generator which Westinghouse Electric Company is manufacturing for the Watts Bar Dam of Tennesse Valley Authority (TVA). It is lined with thousands of armature coils, and over 100,000 sheets of laminated iron which serve to conduct the electricity. The stator frame is part of the generator inside of which revolves the rotor or revolving part. The whole frame weighs 425,000 pounds and is shipped in four quarter sections. A worker measures the resistance of the windings. The frame measures 378 inches in diameter

Philadelphia, Pennsylvania. Stator frame of the 30,000 kilowatt genera...

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

Conversion. Copper and brass processing. This is an inverted bull clock, a modern piece of equipment in a brass and copper mill for drawing large diameter wire. As the wire leaves the machine, it is automatically coiled for easy handling. Most frequently it is redrawn to smaller diameters, though there are many uses for heavy wire, too. Chase Brass and Copper Company, Euclid, Ohio

Conversion. Copper and brass processing. This is an inverted bull cloc...

Public domain photograph of manufacturing, industry, free to use, no copyright restrictions image - Picryl description

Conversion. Copper and brass processing. The inside of a large brass and copper tube mill. Copper tubes are made in many sizes, and in many alloys, and are needed for war production in hundreds of different ways--from small diameter tubing for gas and oil lines in airplanes and tanks and motor cars to large diameter tubes used in construction of our battleships. A tube annealing furnace may be seen to the right. Chase Brass and Copper Company, Euclid, Ohio

Conversion. Copper and brass processing. The inside of a large brass a...

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

Women in industry. Tool production. Testing small diameter, high-speed twist drills, these women employed by a Midwest drill and tool company roll the drills down a slight incline to determine regularity of diameter. It's a job requiring patience and finger dexterity, and these young women possess those definite feminine propensities for just such work. Republic Drill and Tool Company, Chicago, Illinois

Women in industry. Tool production. Testing small diameter, high-spee...

Picryl description: Public domain image of a woman working, women labor, 1940s, economic conditions, home front, world war two, free to use, no copyright restrictions.

Anaconda smelter, Montana. Anaconda Copper Mining Company. Smokestack, which is the largest in the world: 585 feet in height with a diameter at base of seventy-five feet and at top of sixty feet. Flue gases are discharged at the rate of three to four million cubic feet per minute. The arsenic plant is seen at the base of the stack

Anaconda smelter, Montana. Anaconda Copper Mining Company. Smokestack,...

Picryl description: Public domain image of a tower, column, chimney, free to use, no copyright restrictions.

Women in industry. Tool production. Testing small diameter, high-speed twist drills, this young woman employed by a Midwest drill and tool company is one of America's women "behind the men behind the guns." Drills must be perfectly made so that the nation's war weapons can be built to accurate specifications. Republic Drill and Tool Company, Chicago, Illinois

Women in industry. Tool production. Testing small diameter, high-spee...

Picryl description: Public domain image of a woman working, women labor, 1940s, economic conditions, home front, world war two, free to use, no copyright restrictions.

Anaconda smelter, Montana. Anaconda Copper Mining Company. Base of the smokestack which is seventy-five feet in diameter

Anaconda smelter, Montana. Anaconda Copper Mining Company. Base of the...

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

Conversion. Copper and brass processing. Here is a stock of billets, or solid cylindrical brass or copper castings, which have been sawed to length. These billets will be heated and put through a powerful extrusion machine, which will extrude rods, tubes or other special shapes from them. Billets are cast six inches to eight inches in diameter and usually from four to ten feet long. These are sawed to shorter lengths before they go to the extrusion machines. Chase Brass and Copper Company, Euclid, Ohio

Conversion. Copper and brass processing. Here is a stock of billets, o...

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

Conversion. Copper and brass processing. Stocks of partially completed lengths of seamless copper tube in many sizes. These have still to go through several more draws through dies on drawbenches. Each draw reduces them in diameter and wall thickness, and lengthens them out. Then, before the tubes leaves the mill, the ends will be sawed off straight and clean. Chase Copper and Brass Company, Euclid, Ohio

Conversion. Copper and brass processing. Stocks of partially completed...

Picryl description: Public domain photograph of lumber, lumberjack workers, 1930s, Great Depression, economic conditions, free to use, no copyright restrictions.

Anaconda smelter, Montana. Anaconda Copper Mining Company. Looking up the hill towards the smokestack which is the largest in the world: 585 feet high with diameter at base seventy-five feet and at top sixty feet

Anaconda smelter, Montana. Anaconda Copper Mining Company. Looking up ...

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

Butte, Montana. Anaconda Copper Mining Company. Machinist measuring diameter of pump plunger which he is making in the machine shop

Butte, Montana. Anaconda Copper Mining Company. Machinist measuring di...

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.

Conversion. Copper and brass processing. Gaging copper rotating bands. These bands are sawed from long copper tubes, machined to size, serrated and applied like a collar to projectiles. These copper rotating bands fit the serrations inside gun barrels, and make the projectile rotate as it is shot from the gun. The man in this picture is checking the diameter of the bands as they come from the saws, before they are machined. Chase Copper and Brass Company, Euclid, Ohio

Conversion. Copper and brass processing. Gaging copper rotating bands....

Picryl description: Public domain photograph of worker, marketplace, vendor, 1930s, Great Depression, economic conditions, free to use, no copyright restrictions.

Conversion. Copper and brass processing. Drawing seamless copper tube. Rough cast tubes tapered at one end to fit through a die are gripped in the tongs of the electric motor-driven vehicle on the drawbench and pulled or "drawn" through the die to be reduced to the desired size. Tubes usually are redrawn many times; each successive "draw" reduces the diameter, and increases the length. Brass tubes need to be annealed or softened between each draw, but copper tubes can be drawn several times without intermediate annealing. The tapered nose of the tubes may be seen just behind the drawbench operator. Chase Copper and Brass Company, Euclid, Ohio

Conversion. Copper and brass processing. Drawing seamless copper tube....

Picryl description: Public domain image of an industrial building, factory, workshop, workers, 20th century, free to use, no copyright restrictions.

Detroit, Michigan. Assembly of Rolls Royce engines at the Packard motor car company. Checking pitch diameter of threaded parts with an inspector

Detroit, Michigan. Assembly of Rolls Royce engines at the Packard moto...

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

Conversion. Copper and brass processing. The inside of a large brass and copper tube mill. Copper tubes are made in many sizes, and in many alloys, and are needed for war production in hundreds of different ways--from small diameter tubing for gas and oil lines in airplanes and tanks and motor cars to large diameter tubes used in construction of our battleships. A tube annealing furnace may be seen to the right. Chase Brass and Copper Company, Euclid, Ohio

Conversion. Copper and brass processing. The inside of a large brass a...

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

Conversion. Copper and brass processing. Drawing seamless copper tube. Rough cast tubes tapered at one end to fit through a die are gripped in the tongs of the electric motor-driven vehicle on the drawbench and pulled or "drawn" through the die to reduce them to the desired size. Tubes usually are redrawn many times; each successive "draw" reduces the diameter, and increases the length. Brass tubes need to be annealed or softened between each draw, but copper tubes can be drawn several times without intermediate annealing. The tapered nose of the tubes may be seen just behind the drawbench operator. The tube is checked with a micrometer after being drawn, to make sure it is the right diameter. The man looking through the short section of tube is inspecting the inner surface for flaws. The Chase Copper and Brass Company, Euclid, Ohio

Conversion. Copper and brass processing. Drawing seamless copper tube....

Public domain photograph of car garage, repair shop, 20th century, free to use, no copyright restrictions image - Picryl description