This guide helps doctors to monitor the health of workers exposed to respirable crystalline silica.  

The most common form of crystalline silica is quartz (CAS 14808-60-7). You can find crystalline silica in aggregates, mortar, concrete and natural and engineered stone. 

This guide is part of a health monitoring guide collection. 

There are health monitoring guides for: 

• persons conducting a business or undertaking (PCBU) 

• guide for workers 

• registered medical practitioners 

• hazardous chemicals