Born-Digital or AnalogAnalogTranscriptRocky flats, Colorado. Safety Air shipments of plutonium will be requested differently beginning in January, 1978. Post S 22, 1977 p.23 Officials will continue to release small amounts of tritium into the air. Post S 26, 1977 p.1,12 RMN S 263 1977 p.20 U.S. Energy Research and Development Administration reports health risks small and economic benefits substantial. Details. RMN S 27) 1977 p.8CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng