GROUPED DATA ON MONTANA SMELTER WORKERS FROM APPENDIX V OF BRESLOW AND
DAY (1987) STATISTICAL METHODS IN CANCER RESEARCH II: DESIGN AND ANALYSIS
OF COHORT STUDIES. IARC SCIENTIFIC PUBLICATION NO. 82. LYON: IARC

Age    Calendar   Period   Arsenic   Person-   Number of deaths from:
group  period     of hire  exposure  years     All  Resp.  All  Circulatory
                                               causes ca.  ca.  diseases