# Austin Powder Company — Hazardous Materials Safety Interpretation - **operation:** document - **citation:** 08-0126 - **title:** Austin Powder Company — Hazardous Materials Safety Interpretation - **source type:** guidance - **agency:** Pipeline and Hazardous Materials Safety Administration - **status:** guidance - **official:** true - **published on:** 2008-06-17 - **effective on:** Not available - **summary:** 08-0126 response to Austin Powder Company concerning 177.848. - **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-interpretation-08-0126.json - **markdown:** https://regulus.evalyn.ai/document/phmsa-interpretation-08-0126.md - **app url:** https://regulus.evalyn.ai/document/phmsa-interpretation-08-0126 - **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/2008/080126.pdf **body:** <<>> U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration JUN 1 '7 2008 Mr. Larry J. (Scooter) King Regulatory Manager Austin Powder Company 25800 Science Park Drive Cleveland, Ohio 44 1 22 1200 New Jersey Avenue, SE Washington, D.C. 20590 Ref. No. 08-0126 Dear Mr. King: This responds to your letter requesting clarification of the segregation requirements for certain explosives under the Hazardous Materials Regulations (HMR; 49 CFR Parts 17 1 - 1 80). Specifically, you ask whether an explosive item classed as a Division 1.4D may be transported on the same transport vehicle as detonators. The answer is yes. Except as otherwise specified, the provisions of 5 177.848(g)(3)(iv) apply to detonators transported on the same transport vehicle with Division 1.1, 1.2, 1.3 material. An explosive item classed as a Division 1.4D may be transported on the same transport vehicle as a detonator. I trust this satisfies your inquiry. Please contact us if we can be of further assistance. Sincerely, Hattie L. Mitchell Chief, Regulatory Review and Reinvention Office of Hazardous Materials Standards <<>> AUSTIN POWDER COMPANY 9 11 7.84 f CLEVELAND, OHIO 44 122 April 29, 2008 U. S. Department of Transportation Pipeline and Hazardous Materials Safety Administration PHH-10 Office of Hazardous Materials Standards 1200 New Jersey Avenue, SE East Building, 2" Floor Washington, DG 20590-0001 Dear SirlMadarn: I have reviewed 177.848 and in the chart for explosives there is an X and a 4 when comparing a D with a B. The 4 1 understand tells rne to review 177.835(g). In reading this paragraph it is plain that detonators are not allowed to be transported with any 1 .I, 1.2, 1.3 or 1.5 unless the provisions of (g) (I), (2) or (3) are met. As I understand, because there is no reference to 1.4 that items that are approved and Classed as 1.4D may be transported with detonators. Is this correct? Sincerely, - Larry 1 (Scooter) King Regulatory Manager 25800 SCIENCE PARK DRIVE CLEVELAND, OHIO 441 22 21 61464-2400 - **truncated:** false - **body characters:** 2061