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.

Formerly: Acts 1955, c.168, s.8. As amended by P.L.231-1983, SEC.2; P.L.57-2013, SEC.21.