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Cover of Bomb Threat Telephone Procedures brochure 


This brochure was issued by Canadian Bomb Data Centre in the late 1970s. The procedures here would have been used by City staff.

 Inside of Bomb Threat Telephone Procedures brochure

 When a bomb threat is received:

  • Listen
  • Be calm and courteous
  • Do not interrupt the caller
  • Obtain as much information as you can
  • Initiate call trace action (where possible) and notify your responsible authority by pre-arranged signal while the caller is on the line
  • For telephone tracing, call: ___

Questions to ask:

  • What time will the bomb explode?
  • Where is it?
  • Why did you place the bomb?
  • What does it look like?
  • Where are you calling from?
  • What is your name?

Threat recipient's particulars:

  •  Name
  • Section/Bureau/Department
  • Person to contact
  • Telephone number

Recorded data:

  • Date
  • Time
  • Duration of call

Exact wording of threat:

Identifying characteristics:

  • Sex
  • Estimated age
  • Accent (English, French, etc)
  • Voice (loud, soft, etc)
  • Speech (fast, slow, etc)
  • Diction (good, nasal, lisp, etc)
  • Manner (calm, emotional, vulgar, etc)
  • Background noises
  • Voice was familiar (specify)
  • Calller was familiar with area

Back of Bomb Threat Telephone Procedures brochure

Evacuation Guidelines:

  • Keep cool
  • Follow instructions of supervisor
  • Remember that you have a bomb threat plan and have been trained to cope with this
  • When evacuating, remove personal property, such as lunch containers, briefcases, purses, etc.

Search Guidelines:

  • Search your immediate area
  • Don't touch anything -- report any suspect object
  • You can be of help by identifying strange or misplaced objects
  • Unlock drawers, cabinets, etc. for search crew


Should a device or suspect device be discovered:

  • Do not touch or move it
  • Do not assume that it is the only one
  • Do notify your control centre immediately