Born-Digital or AnalogAnalogTranscriptRoads. Colorado Ten worst roads for traffic movement listed for Denver Area. Post Je 12, 1978 p.21 Colorado's highways contain recycled tires and cement in pavement. Post Ag 13, 1978 p.10 Use of cut back asphalt on roads may be prohibited be- cause of pollution it causes. RMN N 28, 1978 p.24 2nd in series on General assembly actions; road improve- ment in state gets top priority. RMN D 28, 1978 p.10 jCollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng