Regulation 128Subject to regulations 129, 131 and 134 a manager shall not employ a person in an underground mine that does not provide(a) at least two outlets, including shafts, adits, or tunnels that(i) at any time afford communication with every vein, lode, reef, ore body or mineral deposit being worked and a separate means of ingress and egress from the mine; and(ii) are not at any point less than ten metres distant from each other;(b) a cage or conveyance which is approved by an inspector and which is operated in accordance with guidelines established and maintained at every vertical shaft mentioned in paragraph (a) where the shaft has a depth exceeding ten metres;(c) in the case of a shaft, adit, tunnel or outlet to the surface which does not exceed ten metres in depth and which is at an inclination of more than twenty degrees to the horizontal and which is not provided with a cage or conveyance mentioned paragraph (b), a ladder or stairway and maintained in the prescribed manner; and (d) separate means of ingress and egress for any chamber(i) below ground containing machinery, transformers, electrical switch gear; or(ii) where batteries are charged.