Most explosives, as defined in the Explosives Act, must be classified by Natural Resources Canada before being imported into Canada. It is the responsibility of the importer to confirm that an explosive is classified in Canada, or that an exemption exists for its import. Explosives manufactured in Canada are required to have been classified before they are transported.

Any request concerning the applicability of variation CA 15 must be addressed to:

- Government of Canada
  Natural Resources Canada
  Explosives, Regulatory and Business Services Branch (ERBSB)
  580 Booth Street 9th Floor
  Ottawa, Ontario
  Canada K1A 0E4
  Telephone: (855) 912-0012
  Email: ERDmms@ nrcan.gc.ca
  Website: https://www.nrcan.gc.ca/explosives