# Glencore — Hazardous Materials Safety Interpretation

**Citation:** 01-0061  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2001-03-07

01-0061 response to Glencore concerning 173.22.

## Document text

<<<PAGE 1>>>

f Transportatio
.S. Departmer
Washington, D.C. 20590
400 Seventh St., S.W
Research and
MAR - 7 2001
Mr. Michael O'Connell
Ref. No. 01-0061
Glencore
Three Stamford Plaza
301 Tresser Boulevard
Stamford, CT
06901-3244
Dear Mr. O'Connell:
This 18 in response your February 27, 2001 letter, regarding
the applicability of the Hazardous Materials Regulations (HMR;
49 CFR Parts 171-180) to ferrosilicon, with 65 to 75 percent
silicon.
Under § 173.22, it is the shipper's responsibility to properly
classify a hazardous material. Such determinations are not
required to be verified by this office. However, based on the
test results you provided, it is our opinion that the
ferrosilicon described in your letter does not meet the
criteria of a Division 4.3 and provided it does not meet any
other hazard class, is not subject to the HMR.
I hope this satisfies your request.
Sincerely,
Office of Hazardous Materials
173.22
010061

<<<PAGE 2>>>

FEB 21 2001 14:59 FR GLENCORE LTD 4
203 328 3177 TO 912823663012
P.02/02
GLENCORE Ltd.
Mr. Michael O'Connell
Glencore Ltd.
301 Tresser Boulevard
Stamford, CT 06901-3244
Dear Mr. O'Connell:
This is in response to Hugh Stewart's letter dated October 9, 2000 and your
produced by Silicon Technology (Pty) Ltd.
The Hazardous Material Regulations govern the transportation of hazardous
materials in commerce. Under 49 CFR 173.22, it is the shipper's responsibility to
properly classify a hazardous material. Such determinations are not required to
be verified by this office.
Based upon the test results you provided, it is our opinion that the ferrosilicon
manufactured by Silicon Technology (Pty) Ltd does not meet the criteria of a
Division 4.3 and provided it does not meet any other hazard class, it is not
subject to the HMR.
I hope this satisfies your inquiry. If you need any additional assistance, do not
hesitate to contact us.
Sincerely,
Edward T. Mazzullo
Director Office of Hazardous Material Standards
US DOT / RSPA (DHM-10)
400 7th Street Southwest
Washington, DC 20590-0001
Three Stamford Plaza • 301 Tresser Boulevard • Stamford, CT 06901-3244 • U.S.A.
Telephone (203) 328-4900 • Telefax (203) 328-3177 • Telex 6819406
** TOTAL PAGE.02**
-

## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/2001/010061.pdf>
- Source ID: `phmsa`
- SHA-256: `ff3314939f40bd349ac775b56157204ccb84b63c07a43bb491836b23193b5e48`
- Retrieved: 2026-08-20T00:59:31.977Z
- Exported: 2026-08-22T13:54:22.874Z
- Document slug: `phmsa-interpretation-01-0061`

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