[Code of Federal Regulations] [Title 29, Volume 5] [Revised as of July 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 29CFR1905.4] [Page 66] TITLE 29--LABOR CHAPTER XVII--OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR PART 1905_RULES OF PRACTICE FOR VARIANCES, LIMITATIONS, VARIATIONS, Subpart A_General Sec. 1905.4 Amendments to this part. The Assistant Secretary may at any time revise, amend, or revoke any provisions of this part, on his own motion or upon the written petition of any person.