coppermining
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![Copper mining section between Ducktown and Copperhill], Tennessee. Fumes from smelting copper for sulfuric acid have destroyed all vegetation and eroded the land (LOC)](http://farm3.static.flickr.com/2310/2178265157_71530c00af_m.jpg)
Copper mining section between Ducktown and Copperhill], Tennessee. Fumes from smelting copper for sulfuric acid have destroyed all vegetation and eroded the land (LOC)
by The Library of Congress
by The Library of Congress
No known copyright restrictions(著作権制限なし)

View of the Utah Copper Company open-pit mine workings at Carr Fork, as seen from the railroad, Bingham Canyon, Utah (LOC)
by The Library of Congress
by The Library of Congress
No known copyright restrictions(著作権制限なし)

Governor General Tweedsmuir's plane for flight from Edmonton to Coppermine, 1937
by Provincial Archives of Alberta
by Provincial Archives of Alberta
No known copyright restrictions(著作権制限なし)
No known copyright restrictions(著作権制限なし)
![Copper mining section between Ducktown and Copperhill], Tennessee. Fumes from smelting copper for sulfuric acid have destroyed all vegetation and eroded the land (LOC)](http://farm3.static.flickr.com/2201/2179057520_62b3c5e745_m.jpg)
Copper mining section between Ducktown and Copperhill], Tennessee. Fumes from smelting copper for sulfuric acid have destroyed all vegetation and eroded the land (LOC)
by The Library of Congress
by The Library of Congress
No known copyright restrictions(著作権制限なし)
121件~180件 (全 1,041件)