[Assessment of asbestos exposure, mortality study, and health intervention in workers formerly exposed to asbestos in a small factory making drying machines for textile finishing and the paper mill industry in Pistoia, Italy].
OBJECTIVE
Three malignant pleural mesotheliomas occurred among workers of a small factory that manufactured drying machines for the textile and paper mill industries using asbestos cement (crocidolite, amosite and chrysotile) as insulating panels. The Occupational Medicine Unit of the Local Health Unit of Pistoia, Italy, carried out an intervention programme in the plant in order to 1) assess past asbestos exposure via analysis of the fibre content of samples from drying machines, and of dust samples collected in the factory. Information on the characteristics of occupational exposure was also collected; 2) investigate cancer mortality by means of a mortality study of the employees and, 3) carry out a health intervention programme in workers formally exposed to asbestos in the past.


METHODS
Samples from the drying machines and dust samples collected in the factory were analysed using X-ray diffractometric methods. Information on the characteristics of occupational exposure were collected by interviewing plant workers. Two-hundred and fifty employees who had worked in the factory between 1962 and 2000 were included in the mortality study. Follow-up was performed from 1962 to 2002. Health intervention in workers exposed to asbestos in the past involved general practitioners and occupational physicians (first level medical examinations); pneumologists and radiologists (second level medical examinations) of the local health unit.


RESULTS
Asbestos fibres were found both in samples from drying machines and in dust samples collected in the factory. Interviews with workers showed that asbestos exposure varied considerably. The SMR for mesothelioma and lung cancer in 234 male workers were 37.0 (95%CI: 4.47-130.0), and 1.29 (95%CI: 0.26-3.78), respectively, based on mortality rates for Tuscany region. Sixty-two workers underwent first level medical examinations; 57 second level examinations. Chronic obstructive lung disease was found in 3 workers; restrictive lung disease was found in 3 employees, one of whom had pleural plaques.


CONCLUSIONS
Further investigation is needed in order to identify unknown asbestos exposures in small metal engineering factories.
Fedi
A
A
Archivio Regionale Toscano Mesoteliomi Maligni--UO Epidemiologia Ambientale Occupazionale--CSPO-Firenze--Regione Toscana.
Blagini
B
B
Melosi
Antonella
A
Marzuoli
E
E
Ancillotti
M
M
Gorini
G
G
Costantini
Adele Seniori
AS
Silvestri
S
S
Innocenti
A
A
D000163:Acquired Immunodeficiency Syndrome / Q000401:mortality; D000328:Adult; D000368:Aged; D000395:Air Pollutants, Occupational / Q000009:adverse effects / Q000032:analysis*; D001194:Asbestos / Q000032:analysis*; D017639:Asbestos, Amosite / Q000032:analysis; D017638:Asbestos, Crocidolite / Q000032:analysis; D017632:Asbestos, Serpentine / Q000032:analysis; D002318:Cardiovascular Diseases / Q000401:mortality; D002423:Cause of Death; D015331:Cohort Studies; D004391:Dust / Q000032:analysis; D004866:Equipment Contamination / Q000706:statistics & numerical data; D005500:Follow-Up Studies; D006801:Humans; D007558:Italy; D008175:Lung Neoplasms / Q000209:etiology / Q000401:mortality; D008297:Male; D008420:Manufactured Materials; D008654:Mesothelioma / Q000209:etiology / Q000401:mortality; D019016:Mineral Fibers / Q000032:analysis; D009369:Neoplasms / Q000401:mortality; D009784:Occupational Diseases / Q000209:etiology / Q000401:mortality*; D016273:Occupational Exposure / Q000706:statistics & numerical data; D009786:Occupational Health Services / Q000458:organization & administration / Q000706:statistics & numerical data; D010209:Paper; D010997:Pleural Neoplasms / Q000209:etiology / Q000401:mortality; D029424:Pulmonary Disease, Chronic Obstructive / Q000209:etiology; D013783:Textile Industry / Q000295:instrumentation*; D014754:Violence; D017132:Workplace; D014961:X-Ray Diffraction
D000395:Air Pollutants, Occupational; D017632:Asbestos, Serpentine; D004391:Dust; D019016:Mineral Fibers; D017638:Asbestos, Crocidolite; D017639:Asbestos, Amosite; D001194:Asbestos