[Code of Federal Regulations] [Title 30, Volume 1] [Revised as of July 1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 30CFR57.3460] [Page 321] TITLE 30--MINERAL RESOURCES CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR PART 57--SAFETY AND HEALTH STANDARDS--UNDERGROUND METAL AND NONMETAL MINES--Table of Contents Subpart B--Ground Control Sec. 57.3460 Maintenance between machinery or equipment and ribs. Persons shall not perform maintenance work between machinery or equipment and ribs unless the area has been tested and, when necessary, secured.