Blasting Close Call: Rock travels 500 metres, penetrates camp cookhouse roof

Safety Alert Type: 
Road Building/Deactivation
Coastal BC
Date of Incident / Close Call: 
Company Name: 
Details of Incident / Close Call: 

An Interfor Coastal Woodland’s road building contractor had a very serious fly rock incident, with a 6-inch rock penetrating through a cookhouse roof.

The cookhouse was occupied at the time and the rock landed within 6 meters of workers. The blue arrow in picture on the left points to hole in roof.

Learnings and Suggestions: 

Road crew blasting took place approximately 500 metres of horizontal distance and 400 metres of vertical distance upslope above the cookhouse. Cookhouse workers below were not notified of blast other than via whistles. Helicopter in area did not hear blast notification on radio frequency.

All Blaster’s must know:

  • Blast location on map relative to all workers, structures, boats, aircrafts or other human activity.
  • Where occupied structures are within blasting interphase and must implement a communication plan with the occupants, with direction to clear the structure and move to an established safe zone. Blaster is responsible to ensure blast zone is clear and maintained with guards in place.

Aircraft notification to be improved by broadcasting a 1-minute notification as well as the 5-minute notification on radio frequency. Aircraft are noisy so the radio caller must speak clearly with microphone close to mouth.

No blasting within 1 km of an occupied dwelling. If there is any question as to risk to people, property, aircraft and/or boats, STOP and report to Supervisor.

For more information on this submitted alert: 

Gary Bauer, Coastal Woodlands Operations



File attachments
Safety Alert-Interfor-Blasting Close Call-Coastal Woodlands-Nov 30-2018.pdf
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