(a) Each application shall contain the anticipated or actual starting and termination date of each phase of the underground mining activities and the anticipated number of acres of surface lands to be affected, and the horizontal and vertical extent of proposed underground mine workings, for each phase of mining and over the total life of the permit.      
        (b) If the applicant proposes to conduct the underground mining activities in excess of 5 years, the application shall contain the information needed for the showing required under §12.219 of this title (relating to Permit Terms).       
     Source Note:        The provisions of this §12.159 adopted to be effective April 7, 1997, 22 TexReg 3093.