[Code of Federal Regulations] [Title 49, Volume 2] [Revised as of October 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 49CFR] [Page 347] TITLE 49--TRANSPORTATION CHAPTER I--RESEARCH AND SPECIAL PROGRAMS ADMINISTRATION, DEPARTMENT OF TRANSPORTATION Subpart D_Marking Sec. 172.310 Class 7 (radioactive) materials. In addition to any other markings required by this subpart, each package containing Class 7 (radioactive) materials must be marked as follows: (a) Each package with a gross mass greater than 50 kg (110 pounds) must have its gross mass marked on the outside of the package. (b) Each packaging must be marked on the outside of the package, in letters at least 13 mm (0.5 inch) high, with the words ``TYPE A'' or ``TYPE B'' as appropriate. A packaging which does not conform to Type A or Type B requirements may not be so marked. (c) Each Type B, Type B(U) or Type B(M) packaging must be marked on the outside of the package with a radiation symbol that conforms to the requirements of appendix B to part 172. (d) Each package destined for export shipment must also be marked ``USA'' in conjunction with the specification marking, or other package certificate identification. (See Sec. Sec. 173.471, 173.472, and 173.473 of this subchapter). [Amdt 172-143, 60 FR 50304, Sept. 28, 1995, as amended by 172-143, 61 FR 20749, May 8, 1996; 65 FR 58626, Sept. 29, 2000; 66 FR 45379, Aug. 28, 2001]