Osborn, E. F. (Elburt Franklin), 1911-1998Rainwater, Edward H.2017-11-142022-02-032017-11-142022-02-03https://hdl.handle.net/11124/171872Mine report no. 462.Includes illustrations, maps."Report furnished by: P.J. Schlosser."Missing pages 4, 31, and 48.Typescript (carbon copy).reportsengIn copyright - non-commercial use permitted (http://rightsstatements.org/vocab/InC-NC/1.0/).Geology, StratigraphicGeology -- Colorado -- Chaffee CountyMines and mineral resources -- Colorado -- Chaffee CountyCalumet Mine (Colo.)Calumet Mining District (Colo.)Text