61(1)Where, in an underground or tower mounted hoist room, the normal air supply may become contaminated, an employer shall ensure that uncontaminated air is available to the hoist operator by means of
(a)
an enclosed booth with a positive supply of uncontaminated air,
(b)
a self-contained breathing apparatus, together with a fully charged cylinder of compressed air of at least 8.5 m3 capacity that conforms to CSA standard CAN3-Z180.1-M85, “Compressed Breathing Air and Systems”, or
(c)
a self-contained breathing apparatus for closed-circuit oxygen rebreathing.
61(2)An employer shall ensure that a hoist operator who may be required to use self-contained breathing apparatus is competent in its use.