Sylvanite mine. Gothic COLORADO Activities; rich ore. R.M. News. Apr. 25, 1884 p.3 c.4 Rich ore; development. R.14, News. Dec. 19, 1884 p.5.c.1 FAMOUS character of ore; development. R.M. News. ?eh, 1, 1885 p.7 e.3 History; OPERATIONS discovered, 1870. R.Y. Hers. Jan. 12, 1883 p.2 c.3
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