[Code of Federal Regulations] [Title 30, Volume 1] [Revised as of July 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 30CFR50.40] [Page 261] TITLE 30--MINERAL RESOURCES CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR PART 50_NOTIFICATION, INVESTIGATION, REPORTS AND RECORDS OF ACCIDENTS, INJURIES, ILLNESSES, EMPLOYMENT, AND COAL PRODUCTION IN MINES--Table of Contents Subpart E_Maintenance of Records; Verification of Information Sec. 50.40 Maintenance of records. (a) Each operator of a mine shall maintain a copy of each investigation report required to be prepared under Sec. 50.11 at the mine office closest to the mine for five years after the concurrence. (b) Each operator shall maintain a copy of each report submitted under Sec. 50.20 or Sec. 50.30 at the mine office closest to the mine for five years after submission. Upon request by the Mine Safety and Health Administration, an operator shall make a copy of any report submitted under Sec. 50.20 or Sec. 50.30 available to MSHA for inspection or copying. [42 FR 65535, Dec. 30, 1977, as amended at 43 FR 12318, Mar. 24, 1978]