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Copper Sheets for Electrolysis Tanks El Paso 1910 - Available at KNOWOL

Copper Sheets for Electrolysis Tanks El Paso 1910

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Copper Electrolysis Process at Phelps Dodge Refining 1919 - Available at KNOWOL

Copper Electrolysis Process at Phelps Dodge Refining 1919

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Electrolytic Tanks in Copper Production Early 20th Century - Available at KNOWOL

Electrolytic Tanks in Copper Production Early 20th Century

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Phelps Dodge Copper Anodes Conveyors El Paso 1955 - Available at KNOWOL

Phelps Dodge Copper Anodes Conveyors El Paso 1955

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Vintage Phelps Dodge Wire Bars Plant Interior Early 20th Century - Available at KNOWOL

Vintage Phelps Dodge Wire Bars Plant Interior Early 20th Century

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El Paso Texas Plant Interior Early 20th Century Image - Available at KNOWOL

El Paso Texas Plant Interior Early 20th Century Image

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Phelps Dodge Copper Refining Company Interior 1952 - Available at KNOWOL

Phelps Dodge Copper Refining Company Interior 1952

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Phelps Dodge Refining Plant Interior El Paso circa 1900 - Available at KNOWOL

Phelps Dodge Refining Plant Interior El Paso circa 1900

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Phelps Dodge Refining Plant El Paso 1950 Industrial Operations - Available at KNOWOL

Phelps Dodge Refining Plant El Paso 1950 Industrial Operations

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Phelps Dodge Refining Company Plant Interior 1948 - Available at KNOWOL

Phelps Dodge Refining Company Plant Interior 1948

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El Paso Copper Refining Electrolytic Tanks 1951 - Available at KNOWOL

El Paso Copper Refining Electrolytic Tanks 1951

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Phelps - Dodge Copper Refining Plant El Paso 1940 - Available at KNOWOL

Phelps-Dodge Copper Refining Plant El Paso 1940

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Phelps - Dodge Copper Refining Plant El Paso 1939 - Available at KNOWOL

Phelps-Dodge Copper Refining Plant El Paso 1939

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1943 Workers Trimming Copper Bars at Phelps - Dodge Plant - Available at KNOWOL

1943 Workers Trimming Copper Bars at Phelps-Dodge Plant

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1943 Copper Refining Workers at Phelps - Dodge Plant Texas - Available at KNOWOL

1943 Copper Refining Workers at Phelps-Dodge Plant Texas

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1942 Copper Sheets for War Effort at Phelps - Dodge Plant - Available at KNOWOL

1942 Copper Sheets for War Effort at Phelps-Dodge Plant

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Copper Sheet Production for WWII in El Paso 1943 - Available at KNOWOL

Copper Sheet Production for WWII in El Paso 1943

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Mid - 20th Century Copper Production at Phelps - Dodge Refining - Available at KNOWOL

Mid-20th Century Copper Production at Phelps-Dodge Refining

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Copper Production at Phelps - Dodge Plant El Paso 1942 - Available at KNOWOL

Copper Production at Phelps-Dodge Plant El Paso 1942

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Copper Production in El Paso Texas 1942 - Available at KNOWOL

Copper Production in El Paso Texas 1942

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Copper Refining Yard in El Paso Texas 1942 - Available at KNOWOL

Copper Refining Yard in El Paso Texas 1942

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Copper Production for WWII at Phelps - Dodge Refining 1942 - Available at KNOWOL

Copper Production for WWII at Phelps-Dodge Refining 1942

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1942 Copper Ready for Refining at Phelps - Dodge Plant Texas - Available at KNOWOL

1942 Copper Ready for Refining at Phelps-Dodge Plant Texas

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1942 Fire Door Operation at Phelps - Dodge Refining Company - Available at KNOWOL

1942 Fire Door Operation at Phelps-Dodge Refining Company

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Copper Production Through Electrolysis 1942 - Available at KNOWOL

Copper Production Through Electrolysis 1942

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Copper Production Electrolysis at Phelps - Dodge 1943 - Available at KNOWOL

Copper Production Electrolysis at Phelps-Dodge 1943

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1943 Copper Charging Process at Phelps - Dodge Refining Company - Available at KNOWOL

1943 Copper Charging Process at Phelps-Dodge Refining Company

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Copper Production Electrolysis at Phelps - Dodge 1942 - Available at KNOWOL

Copper Production Electrolysis at Phelps-Dodge 1942

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Copper Ingots on Conveyors at Phelps - Dodge 1942 - Available at KNOWOL

Copper Ingots on Conveyors at Phelps-Dodge 1942

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Copper Production at Phelps - Dodge Refining Company 1945 - Available at KNOWOL

Copper Production at Phelps-Dodge Refining Company 1945

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Copper Sheets from Electrolysis El Paso Texas 1942 - Available at KNOWOL

Copper Sheets from Electrolysis El Paso Texas 1942

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Copper Electrolysis Production at Phelps - Dodge 1943 - Available at KNOWOL

Copper Electrolysis Production at Phelps-Dodge 1943

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1943 Electrolytic Copper Sheets Phelps - Dodge Refining Co - Available at KNOWOL

1943 Electrolytic Copper Sheets Phelps-Dodge Refining Co

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Copper Production at Phelps - Dodge Refining Company 1942 - Available at KNOWOL

Copper Production at Phelps-Dodge Refining Company 1942

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Copper Sheet Production at Phelps - Dodge 1942 - Available at KNOWOL

Copper Sheet Production at Phelps-Dodge 1942

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Copper Production Through Electrolysis at Phelps - Dodge 1943 - Available at KNOWOL

Copper Production Through Electrolysis at Phelps-Dodge 1943

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Copper Sheets Production for War Effort El Paso 1942 - Available at KNOWOL

Copper Sheets Production for War Effort El Paso 1942

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Copper Sheet Production at Phelps - Dodge Refining 1942 - Available at KNOWOL

Copper Sheet Production at Phelps-Dodge Refining 1942

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1942 Vintage Copper Production at Phelps - Dodge Refining Company - Available at KNOWOL

1942 Vintage Copper Production at Phelps-Dodge Refining Company

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Copper Ingots Being Poured at Phelps - Dodge 1942 - Available at KNOWOL

Copper Ingots Being Poured at Phelps-Dodge 1942

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Copper Production at Phelps - Dodge Plant El Paso 1943 - Available at KNOWOL

Copper Production at Phelps-Dodge Plant El Paso 1943

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Copper Production at Phelps - Dodge Refining Company 1943 - Available at KNOWOL

Copper Production at Phelps-Dodge Refining Company 1943

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Black Wax Area Cotton Production Georgetown Texas 1938 - Available at KNOWOL

Black Wax Area Cotton Production Georgetown Texas 1938

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Black Wax Area Georgetown Texas Cotton Farming 1938 - Available at KNOWOL

Black Wax Area Georgetown Texas Cotton Farming 1938

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U.S. Highway No. 54 Migration Scene Texas 1938 - Available at KNOWOL

U.S. Highway No. 54 Migration Scene Texas 1938

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Day Laborers Hoeing Cotton Navarro County Texas 1937 - Available at KNOWOL

Day Laborers Hoeing Cotton Navarro County Texas 1937

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Tractor in Cotton Field Corsicana Texas June 1937 - Available at KNOWOL

Tractor in Cotton Field Corsicana Texas June 1937

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Tractor Pulling Riding Plow in Centrae Texas 1937 - Available at KNOWOL

Tractor Pulling Riding Plow in Centrae Texas 1937

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