Alert: Notifications and correspondence during COVID-19 restrictions

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You might also hear from us as we proactively call businesses about how they're operating safely during Alert Level Two. 

This report from 2003 brings together two separate but related investigations, the National Dust Project and the Respiratory System Survey, each of which were carried out as part of the day to day work of Occupational Safety and Health (OSH).

Because of the nature of the report, there were inevitable constraints on the numbers of sites visited and tested and the number of individuals surveyed.

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Respiratory health and silica dust levels in the extractive industry (PDF 786 KB)