Mines & mineral resources, Colorado Central city district Milling machinery, 1859. RMN INDEX Hall.History .Colo.v.l p.204 Stamp mill, 1860. Hall.Hist.Colo.v.3 p.411 Number of mines sold, 1863. Hall.Hist.Colo.v.3 p.412 Hayden inspects mines, 1868. Hall.Hist.Colo.v.1 p.469 List of mills operating. Daily Cent.City Register .May 25,1871.p.1 c.4 Decision, mining dispute with city, 1874-1875. Hall.Hist:Colo.v.3 p.409
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