# The RxFire Company — Hazardous Materials Safety Interpretation

**Citation:** 03-0256  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2003-12-08

03-0256 response to The RxFire Company concerning 173.4.

## Document text

<<<PAGE 1>>>

U.S. Department
DEC
8 2003
Research and
of Transportation
400 Seventh St., S.W.
Washington, D.C. 20590
Administrations
ForesTech
Mr. Peter Nopper
Reference No.: 03-0256
The RxFire Company
335 Palo Verde Drive
Leesburg, FL 34748
Dear Mr. Nopper:
This is in response to your letter concerning the small quantity exceptions under the Hazardous
Materials Regulations (HMR; 49 CFR Parts 171-180). You ask if a small quantity (29 g) of a
It is the opinion of this office, that the packaging you describe is an acceptable inner packaging
for a small quantity of fused flammable solid, provided the foil is securely closed to prevent the
escape of any material.
I trust this satisfies your inquiry.
Sincerely,
Thotte z. mitchel
Hattie L. Mitchell
Chief, Regulatory Review and Reinvention
Office of Hazardous Materials Standards
030256
193.4
224:3

<<<PAGE 2>>>

FORESTECH
Corbin
335 PALOVERDE DRIVE LEESBURG FL 34748
$113.4 (a) E)(ir)
Exceptionstor
Waste
October 9, 2003
03-0256
Edward Muzzullo
Office of Hazmat Standards
USDOT-RSPA, DHM-10
400 7th. St. SW
Washington DC 20590
Re: Clarification of 49 CFR 173.4 (a) (2) (ii)
Dear Mr. Muzzullo,
In a recent phone conversation with an Information Specialist regarding the above ("Is
constructed of plastic having a minimum thickness of no less than 0.2 mm (0.008 inch),
or earthenware, glass, or metal;"), as no dimension is given for an inner receptacle
constructed of metal, he indicated that a metal foil would meet the requirement.
However, as Dr. Cushman has noted, sometimes things get lost between the cup and the
to ship a Class 3, Division 4.1, fused flammable solid to the U.S. Forest Service and other
lip. Consequently I am contacting your office for a written verification of this. We wish
qualified fire fighting agencies. Thank you for your clarification.
Sincerely,
Peter Nopper
The RxFire Company, dba ForesTech
352-360-1114
forestech@rxfire.us

## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/2003/030256.pdf>
- Source ID: `phmsa`
- SHA-256: `92418692d181a836987c405a2b17ef781d01307f19d0e08932ffb5cdf57828d2`
- Retrieved: 2026-08-20T00:59:31.977Z
- Exported: 2026-08-23T07:48:14.669Z
- Document slug: `phmsa-interpretation-03-0256`

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