Report, Tomahawk-Black Diamond groups of gold mines, La Plata County, Colorado

McCausland, Ross D.2017-11-142022-02-032017-11-142022-02-03https://hdl.handle.net/11124/171867Mine report no. 457.Includes maps.Typescript (carbon copy).reportsengIn copyright - non-commercial use permitted (http://rightsstatements.org/vocab/InC-NC/1.0/).Gold mines and mining -- Colorado -- La Plata CountyMines and mineral resources -- Colorado -- La Plata CountyMining claims -- Colorado -- La Plata CountyGeology -- Colorado -- La Plata CountyMine valuation -- Colorado -- La Plata CountyMineral industries -- CostsCalifornia Mining District (Colo.)Report, Tomahawk-Black Diamond groups of gold mines, La Plata County, ColoradoText