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Epidemiological study in two plants producing man made mineral fibers i. evaluation of the occupational exposure

, : Epidemiological study in two plants producing man made mineral fibers i. evaluation of the occupational exposure. Archives des Maladies Professionnelles de Medecine du Travail et de Securite Sociale 48(1): 1-6

Dust measurements have been made in two factories where glass wool is produced. The ponderal concentration as well as the fibres concentration and size distribution have been measured with the aid of the optic or electron microscope. The ponderal concentration is always lower than 10 mg/m3, generally in the region of one mg/m3. The number of fibres per cm3 of air sampling which is measured by the optic microscope is always smaller than 0.3 f/cm3; this applies to fibres of which diameter is less or greater than 3 .mu.m. The median diameters fluctuate between 0.14 and 0.38 .mu.m. The size distributions for the fibres in the original product do not correspond with the size distributions of the airborn fibres.

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