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Cancer mortality among a group of fluorspar miners exposed to radon progeny

Journal Article · · Am. J. Epidemiol.; (United States)
OSTI ID:6485509
; ; ;
A cohort study of the mortality experience (1950-1984) of 1,772 Newfoundland underground fluorspar miners occupationally exposed to high levels of radon daughters (mean dose = 382.8 working levels months) has been conducted. Observed numbers of cancers of the lung, salivary gland, and buccal cavity and pharynx were significantly elevated among these miners. A highly significant relation was noted between radon daughter exposure and risk of dying of lung cancer; the small numbers of salivary gland (n = 2) and buccal cavity and pharynx (n = 6) cancers precluded meaningful analysis of dose response. Attributable and relative risk coefficients for lung cancer were estimated as 6.3 deaths per working level month per million person-years and 0.9% per working level month, respectively. Relative risk coefficients were highest for those first exposed before age 20 years. Cigarette smokers had relative and attributable risk coefficients comparable to those of nonsmokers. Relative risks fell sharply with age, whereas attributable risks were lowest in the youngest and oldest age groups. The results suggest that efforts to raise existing occupational exposure standards may be inappropriate.
Research Organization:
Department of National Health and Welfare, Ottawa, Ontario (Canada)
OSTI ID:
6485509
Journal Information:
Am. J. Epidemiol.; (United States), Journal Name: Am. J. Epidemiol.; (United States) Vol. 128:6; ISSN AJEPA
Country of Publication:
United States
Language:
English

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Related Subjects

560161* -- Radionuclide Effects
Kinetics
& Toxicology-- Man
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BODY
CANADA
CARCINOGENESIS
DIGESTIVE SYSTEM
DISEASES
DOSE-RESPONSE RELATIONSHIPS
ELEMENTS
FLUIDS
GASES
GLANDS
ISLANDS
LUNGS
MINERS
MINING
MORTALITY
NEOPLASMS
NEWFOUNDLAND
NONMETALS
NORTH AMERICA
OCCUPATIONAL EXPOSURE
ORAL CAVITY
ORGANS
PATHOGENESIS
PERSONNEL
PHARYNX
RADIOINDUCTION
RADON
RARE GASES
RESPIRATORY SYSTEM
RISK ASSESSMENT
SALIVARY GLANDS