California- company Purchases, Hidden treasure mill, Black Hawk district Colorado . 1884 p.3 c:2 Cold returns at mill, Central City diet. Colo. Owns Hidden treasure mill, Black Hawk diet. Colo. R.M.News.June 18,1884 p.3 c.2 Operating California mine, Central City diet. Colo. R.M.News.June 31,1884 p.6 c.3 Mine development, Central City diet. Colo. R M.News.Dec.34,1884 p 3 c.1
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