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Occupational Medicine 1995;45:239-246
© 1995 Society of Occupational Medicine

research-article

Health status and exposure of workers at a pilot brown coal liquefaction plant in Australia, 1985—1991

T. Driscoll, J. Mandryk, C. Corvalan, M. Nurminen, B. Hull, A. Rogers, P. Yeung, C. Hollo, E. Ruck and J. Leigh

National Institute of Occupational Health and Safety Sydney, Australia

In 1985, Brown Coal Liquefaction (Victoria) Pty Ltd (BCLV) commenced operation of a pilot plant that investigated the feasibility of producing oil from brown coal. The plant operated for five years. This study aimed to use exposure and health information routinely collected by the company to characterize various health parameters of the workforce and to investigate whether any adverse health measures were exposure-related. About 1680 persons were employed at some time or other by BCLV, and the primary study population consisted of 408 workers who had a medical examination at the end of employment and who consented to being in an epidemiological study. Reported photosensitivity was associated with higher cumulative skin exposure (RR = 1.85; 95% Cl = 1.22–2.78), with an exposure-response relationship of increasing risk with increasing skin exposure being suggested. There was no consistent evidence that chemical exposure at BCLV had any negative effect on the haematological, biochemical, endocrine or lung function of workers at the plant. However, the maximum follow-up period of less than eight years limits the ability of the study to detect any emerging chronic effects.

Correspondence and reprint requests to: Dr Tim Driscoll, Epidemiology and Surveillance Unit, National Institute of Occupational Health and Safety, Worksafe Australia, GPO Box 58, Sydney, NSW 2001, Australia


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