Further update of the analysis of mortality of workers in a nuclear facility

The purpose of this note is to provide a second updated analysis of the data presented originally by Gilbert and Marks. The first update by Gilbert and Marks, which was based on 12,522 workers initially employed at Hanford before 1965, included deaths up to May 1977. Since that time, additional mortality information has been received, the study population has been expanded to include workers initially employed during and after 1965, and minor corrections of employment dates and other occupational information have been made