173.155—Exceptions for Class 9 (miscellaneous hazardous materials).

[Amdt. 173-224, 55 FR 52634, Dec. 21, 1990, as amended at 56 FR 66270, Dec. 20, 1991; Amdt. 173-231, 57 FR 52940, Nov. 5, 1992; Amdt. 173-253, 61 FR 27174, May 30, 1996; 71 FR 14603, Mar. 22, 2006]