Regulations as to employment of boys below ground.
6. With respect to the employment of boys in a mine below ground, the following regulations shall have effect; that is to say,
(1) There shall be allowed an interval of not less than eight hours between the period of employment on Friday and the period of employment on the following Saturday, and in other cases of not less than twelve hours between each period of employment:
(2) The period of each employment shall be deemed to begin at the time of leaving the surface, and to end at the time of returning to the surface:
(3) A week shall be deemed to begin at midnight on Saturday night and to end at midnight on the succeeding Saturday night.
