2.—(1) In this Act “industrial work” means—
(b) work carried out in mines,
(c) work in the transport of persons or goods, and
(d) such work as the Minister may by order under subsection (2) of this section declare to be industrial work for the purposes of this Act.
(2) The Minister may by order declare any form of work to be industrial work for the purposes of this Act.
(3) The Minister may by order amend or revoke an order under this section including an order under this subsection.