IC 22-10-2-2: Maps; certification and seal; revision and supplementation; temporary notations

Sec. 2. (a) All maps required to show the underground workings of any mine, within this state, shall be made or certified by a registered engineer or professional surveyor and sealed by the professional engineer or professional surveyor.

(b) The map shall be kept up-to-date by temporary notations and the map shall be revised and supplemented at intervals prescribed by the director on the basis of a survey made or certified by the professional engineer or professional surveyor.

(c) Mine maps shall be revised and supplemented at intervals of not more than once a year.

(d) 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; and

(4) escapeways designated by means of symbols.