URS Corporation

摘要

This is in response to your January 8, 2013 letter and follow-up telephone discussions requesting clarification of the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180). You ask several questions pertaining to § 173.164(a)(5), an exception for mercury lamps, when transported as cargo aboard an aircraft. This exception was recently codified into the HMR pursuant to a final rule published under Docket HM-215L (78 FR 987), Hazardous Materials: Harmonization with International Standards (RRR).