Official US Government Icon

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you're on a federal government site.

Secure Site Icon

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

The latest general information on the Coronavirus (COVID-19) is available on Coronavirus.gov. For PHMSA contact information during the COVID-19 health emergency, please visit our page.

United States Department of Transportation United States Department of Transportation

How To Apply For An Explosive Approval

All approval applications can be submitted using the Online Application, by email to explo@dot.gov, or mailed to Department of Transportation, East Building, PHH-32, 1200 New Jersey Avenue SE, Washington, DC 20590.

The explosive approval request should contain the following:

  • Request Letter as described in 49 CFR 107.705.
  • Examination and class recommendation report from a DOT-Approved Explosive Test Lab or a recognized competent authority of a foreign government.
  • A complete summary table for all the explosive compositions contained in the explosive substance or article, the percentages by weight shown and the composition of all mixtures specifically enumerated.
  • Engineering drawings in 8.5 X 11 in. format of all the explosive articles with names, product number or drawing numbers that correspond to the class recommendation report.
  • Designation of Agent (This applies to foreign manufacturers only).

Requests for confidential treatment must be marked in accordance with 49 CFR 105.30.

Last updated: Monday, October 30, 2017