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Interpretation Response #10-0171 ([AWE] [Mr. David A. Cocks])

Below is the interpretation response detail and a list of regulations sections applicable to this response.

Interpretation Response Details

Response Publish Date:

Company Name: AWE

Individual Name: Mr. David A. Cocks

Country: UK

View the Interpretation Document

Response text:

April 8, 2011



Mr. David A. Cocks

Hazard Classification Officer


Aldermaston, Reading

RG7 4PR Berkshire

United Kingdom

Ref. No. 10-0171

Dear Mr. Cocks:

This letter responds to your e-mail inquiry requesting clarification of the approval process under the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180) applicable to foreign-manufactured explosives. Specifically, you ask whether a new explosive approved by a foreign (i.e., non-U.S.) competent authority must also be approved by the Competent Authority of the United States prior to U.S. import.

The answer is yes. Section § 173.56(f) of the HMR states in part that, the Associate Administrator may approve a new explosive on the basis of an approval issued for the explosive by the competent authority of a foreign government. Once reviewed, a reciprocal approval is issued by the Associate Administrator, in writing, acknowledging whether the new explosive may be transported in commerce to, through, or from, the United States.

I trust this satisfies your inquiry. Please contact us if we can be of further assistance.


T. Glenn Foster

Chief, Regulatory Review and Reinvention Branch

Standards and Rulemaking Division


Regulation Sections

Section Subject
173.56 New explosives-definition and procedures for classification and approval