Work-Related Lung Disease Surveillance System (eWoRLD)
Coal Workers' Pneumoconiosis: Morbidity (Archive)
CWXSP: Number and percentage of examined miners with coal workers' pneumoconiosis (category 1/0+), by round and tenure, 1970-1999
Note: Tabulations are based on one chest x-ray per round for each participating miner.
Round 1: Jan. 1970 - July 1973
Round 2: Aug. 1973 - July 1978
Round 3: Aug. 1978 - Dec. 1981
Round 4: Jan. 1982 - Dec. 1986
Round 5: Jan. 1987 - Dec. 1991
Round 6: Jan. 1992 - Dec. 1996
Round 7: Jan. 1997 - Dec. 1999
NOTE: 1997-1999 represents a partial round. See appendices for source description.
Source: NIOSH Coal Workers’ X-ray Surveillance Program.
Reference Number: 2002T02-12
Date Posted: May 2003
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