Petroleum. Colorado Oilmen erecting derrick on hilltop-near Littleton. Post 0 2 1953 p.3 New school of mines building-has built-in oil well. Post Ja 21 '54 p.2 "Doodlebug" defendants claim 72 trial errors. Post Ja 28 1954 P.3 Date set for hearings on "doodlebug" case. Post Ja 29 '54 p.2 Private funds urged to back oil shale plant in Colorado. Post Ja 29 '54 P 4 Great basins petroleum company incorporates with office in Denver. - Post F 24 '54 P.36
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