The Pipeline and Hazardous Materials Safety Administration (“PHMSA”) transmitted a January 27th Interpretive Letter addressing the application of the Hazardous Materials Regulations (“HMR”) applicable to shipping papers. See...more
The United States Pipeline and Hazardous Materials Safety Administration (“PHMSA”) published a January 14th Interpretive Letter clarifying the Hazardous Materials Regulations (“HMR”) applicable to cargo tanks. See Reference...more
The United States Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in a December 22, 2025, Interpretive Letter the application of the Hazardous Materials Regulations (“HMR”) to the transportation of...more
The United States Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in a January 7th Interpretive Letter the application of the federal Hazardous Materials Regulations (“HMR”) to the term “surfactant”...more
The United States Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in a January 6th Interpretive Letter clarification of the Hazardous Materials Regulations (“HMR”) applicable to the definition of a...more
The Pipeline and Hazardous Materials Safety Administration (“PHMSA”) sent a December 11th Interpretive Letter to DG Advisor addressing the application of the federal Hazardous Materials Regulations (“HMR”) to what is...more
The Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in a September 30th Interpretive Letter the application of the federal Hazardous Materials Regulations (“HMR”) to the preparation of shipping...more
The United States Pipeline and Hazardous Materials Safety Administration (“PHMSA”) transmitted a September 30th Interpretive Letter clarifying the Hazardous Materials Regulations (“HMR”) applicable to the preparation of...more
The United States Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in an August 7th Interpretive Letter the application of the federal Hazardous Materials Regulations (“HMR”) to the transportation of...more
The Pipeline and Hazardous Materials Safety Administration (“PHMSA”) clarified in an August 12th Interpretive Letter the Hazardous Materials Regulations (“HMR”) applicable to emergency discharge control equipment for...more
The Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in a July 15th Interpretive Letter the application of the Hazardous Materials Regulations (“HMR”) to intermediate bulk containers (“IBCs”). See...more
The United States Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in a June 10th interpretive letter the application of Hazardous Materials Regulations (“HMR”) applicable to wet batteries...more
The Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in a July 16th Interpretive Letter the application of the federal Hazardous Materials Regulations (“HMR”) applicable to: …the size of a...more
The Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in a November 22, 2022, Interpretive Letter the application of the Hazardous Materials Regulations to hazardous materials training for a forklift...more
The United States Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in a January 2nd interpretive letter a question regarding the application of the Hazardous Materials Regulations (“HMR”) to...more
The United States Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in a January 17th letter a question regarding the applicability of the Hazardous Materials Regulations (“HMR”) applicable to the...more
The United States Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in a December 6th letter the Hazardous Materials Regulation (“HMR”) applicable to the marking requirements for a Department of...more
The United States Department of Transportation Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in a November 26th letter a question addressing the Hazardous Materials Regulations (“HMR”) pressure...more
The Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in an October 15th interpretive letter clarification of the Hazardous Material Regulation (“HMR”) pertaining to the classification of explosives. ...more
The United States Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in a September 20th interpretive letter a request for clarification of the Hazardous Materials Regulations (“HMR”) applicable to...more
The Pipeline and Hazardous Materials Safety Administration (“PHMSA”) responded in a September 12th letter to a question seeking clarification of the Hazardous Materials Regulations (“HMR”) applicable to the testing...more
The United States Pipeline and Hazardous Materials Safety Administration (“PHMSA”) responded in a September 17th interpretive letter to a question seeking clarification of the Hazardous Materials Regulations (“HMR”)...more
The United States Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in an August 1st interpretive letter a question regarding the Hazardous Materials Regulations (“HMR”) applicable to materials of...more
The Pipeline and Hazardous Materials Safety Administration (“PHMSA”) responded in a June 3rd letter to a request for clarification of the Hazardous Materials Regulations (“HMR”) applicable to the design qualification testing...more
The United States Pipeline and Hazardous Materials Safety Administration (“PHMSA”) addressed in a May 30th interpretive letter a question regarding the application of the federal Hazardous Materials Regulations (“HMR”) to...more