Born-Digital or AnalogAnalogTranscriptMines and mineral resources. Colorado Special issue devoted to energy boom. RM Journal Ag 16, 1978 Historic perspective of mining influence on Colorado. by author Duane Smith. RM rocky mountain Journal Ag 16, 1978 sec.l p.4, 6-7 Ft. Lewis College history professor Duane Smith spreads his enthusiasm for Colorado mining; pics. Post Empire Ja 7, 1979 p.20-26 Petroleum and mining contributions to ColoradoOs economy. Post My 12, 1979 p.16CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Mines and mineral resources. Colorado, [424402]. Denver Public Library Digital Collections, accessed 11/03/2026, https://digital.denverlibrary.org/nodes/view/1801541
