Heatley, F. Eugene2018-06-152022-02-032018-06-152022-02-03https://hdl.handle.net/11124/172379Mine report no. 914.Includes maps.Typescript (carbon copy).reportsengIn copyright - non-commercial use permitted (http://rightsstatements.org/vocab/InC-NC/1.0/).Brittain Mining CompanyMercury ores -- Texas -- Presidio CountyMines and mineral resources -- Texas -- Presidio CountyGeology -- Texas -- Presidio CountyText