Section 2(2):
Below Ground, Above Ground
A person working or employed in or in connection with a mine is said to be working or employed-
(a) "below ground" if he is working or employed-
(i) in a shaft which has been or is in the course of being sunk ; or
(ii) in any excavation which extends below superjacent ground, and
(b) "above ground" if he is working in an open cast working or in any other manner not specified in clause (a).