Born-Digital or AnalogAnalogTranscriptPortland, Colorado Ideal Cement Company closes original plant in Portland. RMN Je 12, 1966 p.70 Ideal Basic Industries, Inc. to double size of Portland cement plant. Post N 28, 1971 p.1F Ideal Cement Co. building $25 million plant at Portland. RMN Jy 15, 1.973 p.63CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
