Across
- 4. incidental grounding of a conducting electrical wire
- 5. powered by air pressure
- 7. narrow excavation made below ground surface
- 10. unplanned event that does results in injury
- 12. capable of easily igniting and rapidly burning
- 13. devices that provide clean, filtered breathing air
Down
- 1. a support system designed to prevent a trench cave in
- 2. powered by fluid under pressure
- 3. unplanned event that does not result in injury
- 6. elevated platforms for workers and material
- 8. hazardous chemicals on job sites
- 9. safety data sheets
- 11. personal protective equipment