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12 résultats pour : sulfuric acid

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Students in class learning how to prepare sulphuric acid, Hampton Institute, Hampton, Va., between 1899 and 1900.
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Students in class learning how to prepare sulphuri...

Copper mining and sulfuric acid plant, Copperhill, Tenn., 1940. Creator: Marion Post Wolcott.
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Copper mining and sulfuric acid plant, Copperhill,...

A train bringing copper ore out of the mine, Ducktown, Tenn. , 1940. Creator: Marion Post Wolcott.
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A train bringing copper ore out of the mine, Duckt...

Copper mining and sulfuric acid plant, Copperhill, Tenn., 1940. Creator: Marion Post Wolcott.
HRM22A78_252

Copper mining and sulfuric acid plant, Copperhill,...

Copper mining and sulfuric acid plant, Copperhill, Tenn., 1940. Creator: Marion Post Wolcott.
HRM22A78_253

Copper mining and sulfuric acid plant, Copperhill,...

A train bringing copper ore out of the mine, Ducktown, Tenn. , 1939. Creator: Marion Post Wolcott.
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A train bringing copper ore out of the mine, Duckt...

Copper mining section between Ducktown and Copperhill, Tennessee, 1940. Creator: Marion Post Wolcott.
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Copper mining section between Ducktown and Copperh...

Copper mining section between Ducktown and Copperhill, Tennessee, 1940. Creator: Marion Post Wolcott.
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Copper mining section between Ducktown and Copperh...

A train bringing copper ore out of the mine, Ducktown, Tenn. , 1940. Creator: Marion Post Wolcott.
HRM22A78_256

A train bringing copper ore out of the mine, Duckt...

Copper mining section between Ducktown and Copperhill, Tennessee, 1940. Creator: Marion Post Wolcott.
HRM22A78_257

Copper mining section between Ducktown and Copperh...

Copper mining and sulfuric acid plant, Copperhill, Tenn., 1940. Creator: Marion Post Wolcott.
HRM22A78_251

Copper mining and sulfuric acid plant, Copperhill,...

Copper mining and sulfuric acid plant, Copperhill, Tenn., 1940. Creator: Marion Post Wolcott.
HRM22A78_250

Copper mining and sulfuric acid plant, Copperhill,...