Section 9. For section 35 of the principal Act, the following section shall be substituted, namely:

19. For section 35 of the principal Act, the following section shall be substituted, namely:— "35. Save in respect of cases falling within clause (a) and clause (e) of section 39, no person employed in a mine shall be required or allowed to work in the mine for more than ten hours in any day inclusive of overtime.". Prohibition of employment of certain persons. Substitution of new section for section 35.