---
kind: "section"
citation: "30 C.F.R. § 75.1202-1"
title: "30"
number: "75.1202-1"
heading: "Temporary notations, revisions, and supplements."
url: "https://uscodex.org/cfr/30/75.1202-1"
---

# §75.1202-1. Temporary notations, revisions, and supplements.

- (a) Mine maps shall be revised and supplemented at intervals of not more than 6 months.
- (b) Temporary notations shall include:
  - (1) The location of each working face of each working place;
  - (2) Pillars mined or other such second mining;
  - (3) Permanent ventilation controls constructed or removed, such as seals, overcasts, undercasts, regulators, and permanent stoppings, and the direction of air currents indicated;
  - (4) Escapeways and refuge alternatives designated by means of symbols.

## Notes

### Amendments

[35 FR 17890, Nov. 20, 1970, as amended at 73 FR 80697, Dec. 31, 2008]

### Authority

Authority: 30 U.S.C. 811, 813(h), 957.

### Source

Source: 35 FR 17890, Nov. 20, 1970, unless otherwise noted.

### Amendments

[35 FR 17890, Nov. 20, 1970, as amended at 73 FR 80697, Dec. 31, 2008]