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1,014 media by topicpage 1 of 11
Pennsylvania & Lehigh Zinc Company's works E. Valois lith. ; C. Currier's Lith. N.Y

Pennsylvania & Lehigh Zinc Company's works E. Valois lith. ; C. Currie...

Print shows mining and industrial buildings of the Pennsylvania & Lehigh Zinc Company with the Lehigh River in the foreground and forested hills in the background. Title from item. Currier & Ives : a catalogue... more

Alma Smelter

Alma Smelter

No. 1498. Title from item.

Burmese women only are allowed to hunt for rubies that may escape from the companies washing pans into the mud outisde the wire line, Mogok

Burmese women only are allowed to hunt for rubies that may escape from...

Photograph shows view of ruby mine with structure in the background and women, in the foreground, searching in pools and ditches for rubies that have spilled out of the washing pans. Title from item. In album: ... more

Quartz mine and mill - famous de Lamar mine and mill

Quartz mine and mill - famous de Lamar mine and mill

Photograph shows mining facilities of the De Lamar Mine and Mill in Idaho. Title from item. Illus. in: Boise, Idaho. #1 (left, on page with two other illustrations).

Rhoades - Hall Mine

Rhoades - Hall Mine

Title transcribed from caption accompanying item. Forms part of: Frank and Frances Carpenter collection (Library of Congress). Gift; Mrs. W. Chapin Huntington; 1951.

Leadville, Col., the great mining camp

Leadville, Col., the great mining camp

No. 5476. Title from item.

Gastineau Gold Crushing Plant

Gastineau Gold Crushing Plant

Title transcribed from caption accompanying item. Forms part of: Frank and Frances Carpenter collection (Library of Congress). Gift; Mrs. W. Chapin Huntington; 1951.

Gold mine

Gold mine

Title transcribed from caption accompanying item. Forms part of: Frank and Frances Carpenter collection (Library of Congress). Gift; Mrs. W. Chapin Huntington; 1951.

Rhoades - Hall Mine

Rhoades - Hall Mine

Title transcribed from caption accompanying item. Forms part of: Frank and Frances Carpenter collection (Library of Congress). Gift; Mrs. W. Chapin Huntington; 1951.

Cliff Mine

Cliff Mine

Title transcribed from caption accompanying item. Forms part of: Frank and Frances Carpenter collection (Library of Congress). Gift; Mrs. W. Chapin Huntington; 1951.

Lead-smelting "Plant", Leadville, Colo

Lead-smelting "Plant", Leadville, Colo

No. 22247. Title from item.

Mine Building, Felix, Calaveras County, CA

Mine Building, Felix, Calaveras County, CA

Survey number: HABS CA-1209

Copper State Mine, Maxville, Granite County, MT

Copper State Mine, Maxville, Granite County, MT

Significance: This historic mine reveals much about the technology and engineering techniques utilized in a medium-sized copper mine of the early 20th century. Remains of the mine are more extensive and better ... more

Cliff Shaft Mine Head Frame, Ishpeming, Marquette County, MI

Cliff Shaft Mine Head Frame, Ishpeming, Marquette County, MI

Significance: Because of its prominent location, the Cleveland-Cliffs Iron Company believed it to be important that its new shaft house (replacing an earlier wooden structure) be architecturally pleasing as wel... more

Stone Building, Happy Valley, Calaveras County, CA
Kennecott Copper Corporation, West Bunkhouse, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, West Bunkhouse, On Copper River & Northw...

Survey number: HAER AK-1-B National Register of Historic Places NRIS Number: 78003420

A. D. Wilcox Drift Mine, Linda Creek near Dalton Highway, Bettles, Yukon-Koyukuk Census Area, AK

A. D. Wilcox Drift Mine, Linda Creek near Dalton Highway, Bettles, Yuk...

Significance: This site is unique to the region for its completeness in terms of mining structures and machinery as well as in the unbroken continuation of mining activities occurring on the claim. It was buil... more

Cliff Mine, Mine Tailings Pile, Centennial Ridge, Medicine Bow National Forest, Centennial, Albany County, WY

Cliff Mine, Mine Tailings Pile, Centennial Ridge, Medicine Bow Nationa...

Significance: This site is associated with events that have made significant contributions to the broad patterns of our history, i.e., early 20th century mining for precious metals in Wyoming and the western Un... more

Leesburg Mining District, Napias & Moose Creeks, Salmon, Lemhi County, ID

Leesburg Mining District, Napias & Moose Creeks, Salmon, Lemhi County,...

Significance: The Leesburg Mining District is one of the earliest gold mining camps in Idaho. It was established in 1866 during the Placer Mining Boom. The area has continued to be mined sporadically by small... more

Giffen Mine, Mine Shop, 3 miles Southwest of Stockett (Sec. 14,22,23; T18N R4E), Stockett, Cascade County, MT

Giffen Mine, Mine Shop, 3 miles Southwest of Stockett (Sec. 14,22,23; ...

Survey number: HAER MT-30-C Building/structure dates: 1930 Initial Construction Building/structure dates: 1947

Superior Coal Mines, Wooden Structure, Horse Thief Canyon, South Superior, Sweetwater County, WY

Superior Coal Mines, Wooden Structure, Horse Thief Canyon, South Super...

Significance: The locality consists of a wood frame (Structure C) structure with an associated dugout, automobile garage (Structure D). The structure is located along the east slope of a south to north trendin... more

Superior Coal Mines, Well Casing, Horse Thief Canyon, South Superior, Sweetwater County, WY

Superior Coal Mines, Well Casing, Horse Thief Canyon, South Superior, ...

Significance: The well casing is located along the lower south slope of Horse Thief Draw about 1.7 miles northwest of the town of Superior. The casing consists of a section of steel pipe extending vertically i... more

Sunrise Mine, Hall, Granite County, MT

Sunrise Mine, Hall, Granite County, MT

Significance: The property was one of the more successful and longest operating of the dozen or so gold mills established in Granite County. It made significant contribution to the economic and social developme... more

Superior Coal Mines, Wooden Structure, Horse Thief Canyon, South Superior, Sweetwater County, WY

Superior Coal Mines, Wooden Structure, Horse Thief Canyon, South Super...

Significance: This structure is a two room residential building. The structure is located on the east slope of a south to north trending finger ridge which extends into the valley of Horse Thief Draw approxima... more

Royal Basin Mine & Mill Site, Maxville, Granite County, MT

Royal Basin Mine & Mill Site, Maxville, Granite County, MT

Significance: It was one of the larger outfits in a region noted for numerous and varied mining operations. The intensive development and large-scale investment in the mine made an important contribution to the... more

Webb shaft house, Mesabi Range, Minn., U.S.A.

Webb shaft house, Mesabi Range, Minn., U.S.A.

Stereograph showing two men standing in foreground; railroad car filled with iron ore near shaft house in background. H68689 U.S. Copyright Office. Copyright 1905 by Keystone View Company. No. 6970. Title from item.

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA Forest Service Road No. 623, Ely, White Pine County, NV

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA For...

Significance: The Tonopah Belmont Development Company (TBDC) was one of the most important companies created during Nevada's early twentieth-century mining boom. As ore deposits in its central Nevada mines wer... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA Forest Service Road No. 623, Ely, White Pine County, NV

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA For...

Significance: The Tonopah Belmont Development Company (TBDC) was one of the most important companies created during Nevada's early twentieth-century mining boom. As ore deposits in its central Nevada mines wer... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA Forest Service Road No. 623, Ely, White Pine County, NV

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA For...

Significance: The Tonopah Belmont Development Company (TBDC) was one of the most important companies created during Nevada's early twentieth-century mining boom. As ore deposits in its central Nevada mines wer... more

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA Forest Service Road No. 623, Ely, White Pine County, NV

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA For...

Significance: The Tonopah Belmont Development Company (TBDC) was one of the most important companies created during Nevada's early twentieth-century mining boom. As ore deposits in its central Nevada mines wer... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA Forest Service Road No. 623, Ely, White Pine County, NV

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA For...

Significance: The Tonopah Belmont Development Company (TBDC) was one of the most important companies created during Nevada's early twentieth-century mining boom. As ore deposits in its central Nevada mines wer... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA Forest Service Road No. 623, Ely, White Pine County, NV

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA For...

Significance: The Tonopah Belmont Development Company (TBDC) was one of the most important companies created during Nevada's early twentieth-century mining boom. As ore deposits in its central Nevada mines wer... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA Forest Service Road No. 623, Ely, White Pine County, NV

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA For...

Significance: The Tonopah Belmont Development Company (TBDC) was one of the most important companies created during Nevada's early twentieth-century mining boom. As ore deposits in its central Nevada mines wer... more

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA Forest Service Road No. 623, Ely, White Pine County, NV

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA For...

Significance: The Tonopah Belmont Development Company (TBDC) was one of the most important companies created during Nevada's early twentieth-century mining boom. As ore deposits in its central Nevada mines wer... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA Forest Service Road No. 623, Ely, White Pine County, NV

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA For...

Significance: The Tonopah Belmont Development Company (TBDC) was one of the most important companies created during Nevada's early twentieth-century mining boom. As ore deposits in its central Nevada mines wer... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA Forest Service Road No. 623, Ely, White Pine County, NV

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA For...

Significance: The Tonopah Belmont Development Company (TBDC) was one of the most important companies created during Nevada's early twentieth-century mining boom. As ore deposits in its central Nevada mines wer... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA Forest Service Road No. 623, Ely, White Pine County, NV

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA For...

Significance: The Tonopah Belmont Development Company (TBDC) was one of the most important companies created during Nevada's early twentieth-century mining boom. As ore deposits in its central Nevada mines wer... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA Forest Service Road No. 623, Ely, White Pine County, NV

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA For...

Significance: The Tonopah Belmont Development Company (TBDC) was one of the most important companies created during Nevada's early twentieth-century mining boom. As ore deposits in its central Nevada mines wer... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA Forest Service Road No. 623, Ely, White Pine County, NV

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA For...

Significance: The Tonopah Belmont Development Company (TBDC) was one of the most important companies created during Nevada's early twentieth-century mining boom. As ore deposits in its central Nevada mines wer... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA Forest Service Road No. 623, Ely, White Pine County, NV

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA For...

Significance: The Tonopah Belmont Development Company (TBDC) was one of the most important companies created during Nevada's early twentieth-century mining boom. As ore deposits in its central Nevada mines wer... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA Forest Service Road No. 623, Ely, White Pine County, NV

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA For...

Significance: The Tonopah Belmont Development Company (TBDC) was one of the most important companies created during Nevada's early twentieth-century mining boom. As ore deposits in its central Nevada mines wer... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA Forest Service Road No. 623, Ely, White Pine County, NV

Belmont Mill, Approximately 7 miles south of U.S. Route 50 on USDA For...

Significance: The Tonopah Belmont Development Company (TBDC) was one of the most important companies created during Nevada's early twentieth-century mining boom. As ore deposits in its central Nevada mines wer... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northwestern Railroad, Kennicott, Valdez-Cordova Census Area, AK

Kennecott Copper Corporation, Leaching Plant, On Copper River & Northw...

Significance: The original leaching plant (now the south end of the building) was constructed in 1915 and went into production the next year. The first four leaching tanks could process 300 tons of ore per day... more

Bullfrog Mine, Rhyolite, Nye County, NV

Bullfrog Mine, Rhyolite, Nye County, NV

Significance: Associated with the strikes that set off one of the last major gold mining booms in the Southwest. These strikes had a major impact upon the regional settlement patterns and economic activities o... more

Bullfrog Mine, Rhyolite, Nye County, NV

Bullfrog Mine, Rhyolite, Nye County, NV

Significance: Associated with the strikes that set off one of the last major gold mining booms in the Southwest. These strikes had a major impact upon the regional settlement patterns and economic activities o... more

Bullfrog Mine, Rhyolite, Nye County, NV

Bullfrog Mine, Rhyolite, Nye County, NV

Significance: Associated with the strikes that set off one of the last major gold mining booms in the Southwest. These strikes had a major impact upon the regional settlement patterns and economic activities o... more

Bullfrog Mine, Rhyolite, Nye County, NV

Bullfrog Mine, Rhyolite, Nye County, NV

Significance: Associated with the strikes that set off one of the last major gold mining booms in the Southwest. These strikes had a major impact upon the regional settlement patterns and economic activities o... more

Bullfrog Mine, Rhyolite, Nye County, NV

Bullfrog Mine, Rhyolite, Nye County, NV

Significance: Associated with the strikes that set off one of the last major gold mining booms in the Southwest. These strikes had a major impact upon the regional settlement patterns and economic activities o... more

Bullfrog Mine, Rhyolite, Nye County, NV

Bullfrog Mine, Rhyolite, Nye County, NV

Significance: Associated with the strikes that set off one of the last major gold mining booms in the Southwest. These strikes had a major impact upon the regional settlement patterns and economic activities o... more

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