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Scientific American, Vol. 75, No. 12 (1896) (1896)
leaf 7
and Hecla produced 38,720 short tons, or more than one-half, and taking the combined product economical way to mine them is by slopes. of all the Lake Superior mines since 1856 up to the present year, we find that the Calumet and Hecla has styled the embroidery of his skin. ‘‘ When the tattoo-… … the ore is dumped grew fat on the into the skip, which runs up and down rays. COPPER MINE. © 1896 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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