93   Chief Inspector may require further work

(1)  The Chief Inspector may, by notice in writing, require an operator or former operator of a mine that has ceased to be used before or after it is abandoned, to carry out work to ensure that:

(a)  a shaft or outlet at that mine is fully sealed or filled, or

(b)  a shaft or outlet at that mine is provided with an enclosure, barrier, plug or seal approved by the Chief Inspector, or

(c)  any existing seal, fill, enclosure, barrier or plug at that mine remains effective.

(2)  A person to whom a notice has been given under this section must comply with the notice within the time specified by the notice.

(3)  If the former operator of a mine is not the occupier of the land on which work is required to be carried out under subsection (1), the former operator of the mine must give reasonable notice to the occupier of the land before causing the work to be carried out.