mines mineral resources colorado san juan region Pioneer established smelting works. R. M. News. Apr. 19, 1876 p.4 c.1 Proposition submitted for building railroad. R. M. News. Apr. 20, 1876 p.4 c.3 Need of capital for development. R. M. News. Apr. 30, 1876 p.4 c.3 Mining machinery; transportation. R. 11. News. Y:ay 17, 1876 p.4 c.4 migration to Del Norte. R. M. News. hay 19, 1876 p.4 c.1 Activities, Summit district R. M. News. June 1, 1876 p.4 c.5
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