Prommel, H. W. C. (Harold W. C.)2017-10-122022-02-032017-10-122022-02-03https://hdl.handle.net/11124/171804Mine report no. 415.Typescript (carbon copy).reportsengIn copyright - non-commercial use permitted (http://rightsstatements.org/vocab/InC-NC/1.0/).Mines and mineral resources -- Colorado -- Clear Creek CountyMining claims -- Colorado -- Clear Creek CountyGeology -- Colorado -- Clear Creek CountyIdaho Springs Mining District (Colo.)Reconnaissance investigation of the Highland and adjoining mining claims, Idaho Springs District, Clear Creek County, ColoradoText