National Surveillance System for Pneumoconiosis Mortality
The purpose of the National Surveillance System for Pneumoconiosis Mortality (NSSPM) is to provide a resource for surveillance and research in pneumoconiosis. The data are based on pneumoconiosis mortality data obtained annually from the National Vital Statistics System-Mortality (CDC, NCHS). The system includes all deaths from several types of pneumoconiosis listed as underlying or contributing cause of death on death certificates: coal workers' pneumoconiosis, asbestosis, silicosis, byssinosis, pnuemoconiosis due to inhalation of other dust, and pneumoconiosis unspecified.
http://aspe.hhs.gov/datacncl/datadir/cdc5.htm. Accessed September 4, 2010.