Dust exposure in Finnish foundries.

Assessment of Occupational Exposure to Dust and Crystalline Silica in Foundries

BACKGROUND The term "crystalline silica" refers to crystallized form of SiO2 and quartz, as the most abundant compound on the earth's crust; it is capable of causing silicosis and lung cancer upon inhaling large doses in the course of occupational exposure. The aim of this study was to assess occupational exposure to dust and crystalline silica in foundries in Pakdasht, Iran. MATERIALS AND ME...

Measuring dust exposure with the thermal precipitator in collieries and foundries.

The standard thermal precipitator has been modified for field surveys of airbome dust exposureso as to make it more portable. A microprojector is used when assessing the samples and for coal-mine dusts the counts are restricted to the range 0 5 to 5 microns. In industrial environments the dust concentration appears to vary with a standard deviation of more than 50% of the mean. Part of this var...

Control of Silica Exposure in Foundries

Cancer morbidity and quartz exposure in Swedish iron foundries.

PURPOSE The aim of this study was to determine cancer morbidity amongst Swedish iron foundry workers with special reference to quartz exposure. In addition to respirable dust and quartz, phenol, formaldehyde, furfuryl alcohols, polycyclic aromatic hydrocarbons (PAHs), carbon black, isocyanates and asbestos are used or generated by foundry production techniques and exposure to any of these subst...

Dust exposure and pneumoconiosis in a South African pottery. 1. Study objectives and dust exposure.

Dust exposure and pneumoconiosis were investigated in a South African pottery that manufactured wall tiles and bathroom fittings. This paper describes the objectives of the investigation and presents dust measurement data. x Ray diffraction showed that the clays used by the pottery had a high quartz content (range 58%-23%, mean 38%). Exposure to respirable dust was measured for 43 workers and w...