This 1992 supplement to the Work-Related Lung Disease Surveillance Report is intended for use with the 1991 Work-Related Lung Disease Surveillance Report. The appendix of the 1991 report briefly describes each of the major sources of data used in both the original report and the supplement and directs the reader to additional documentation. This supplement has two sections: Figures and Tables and presents updated data for many of the figures and tables presented in the 1991 report. In addition to updated data, this supplement includes data not previously presented. These data include: 1) sex, race, geographic distribution, industry and occupation from the multiple cause of death data for deaths with mention of asbestosis, malignant neoplasms of the pleura, malignant neoplasms of the peritoneum, coal workers' pneumoconiosis, silicosis, byssinosis, or hypersensitivity pneumonitis; 2) number of discharges with silicosis or asbestosis from the National Hospital Discharge Survey; and 3) reports of occupational asthma and silicosis from the Sentinel Event Notification System for Occupational Risks (SENSOR) program.