30 CFR § 50.40 - Maintenance of records.

---
identifier: "/us/cfr/t30/s50.40"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "30 CFR § 50.40 - Maintenance of records."
title_number: 30
title_name: "Mineral Resources"
section_number: "50.40"
section_name: "Maintenance of records."
chapter_name: "MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR"
subchapter_number: "I"
subchapter_name: "ACCIDENTS, INJURIES, ILLNESSES, EMPLOYMENT, AND PRODUCTION IN MINES"
part_number: "50"
part_name: "NOTIFICATION, INVESTIGATION, REPORTS AND RECORDS OF ACCIDENTS, INJURIES, ILLNESSES, EMPLOYMENT, AND COAL PRODUCTION IN MINES"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "29 U.S.C. 557(a); 30 U.S.C. 811, 813(j), 951, 957, 961."
regulatory_source: "42 FR 65535, Dec. 30, 1977, unless otherwise noted."
cfr_part: "50"
---


# 50.40 Maintenance of records.

(a) Each operator of a mine shall maintain a copy of each investigation report required to be prepared under § 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 § 50.20 or § 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 § 50.20 or § 50.30 available to MSHA for inspection or copying.

[42 FR 65535, Dec. 30, 1977, as amended at 43 FR 12318, Mar. 24, 1978]