Drillers in this group operate mobile drilling machines:
- to bore blast holes in open-pit mines and quarries
- to bore holes for blasting and for building foundations at construction sites
Blasters in this group:
- fill blast holes with explosives
- detonate explosives to dislodge coal, ore and rock or to demolish structures
These workers are employed by:
- mining, quarrying and construction companies
- drilling and blasting contractors