StacksVerified U.S. regulatory reference

30 CFR §75.1202-1

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)Mine maps shall be revised and supplemented at intervals of not more than 6 months.
  2. (b)Temporary notations shall include:
    1. (1)The location of each working face of each working place;
    2. (2)Pillars mined or other such second mining;
    3. (3)Permanent ventilation controls constructed or removed, such as seals, overcasts, undercasts, regulators, and permanent stoppings, and the direction of air currents indicated;
    4. (4)Escapeways and refuge alternatives designated by means of symbols.