Born-Digital or AnalogAnalogTranscriptRio blanco oil shale project- First mining shaft should be started before the end of 1977. Details. RMN O 27, 1977 p.71 Will build $100 million Lurgi-Ruhrgas retort. Post Jy 17, 1979 p.11CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Rio blanco oil shale project, [526178]. Denver Public Library Digital Collections, accessed 11/06/2026, https://digital.denverlibrary.org/nodes/view/1633999
