Paragraph 17 Undertakers may enter and inspect the working of mines.

For the purpose of ascertaining whether any such mines or minerals as aforesaid are being, have been or are about to be, worked so as to damage any of their said works, any authorised officer of the undertakers, after giving 24 hours’ notice and on producing, if so required, some duly authenticated document showing his authority, may enter upon any lands in, on or near which the works are situate and under which they know or suspect that any such mines are being, have been or are about to be, worked, and may enter any such mines and the works connected therewith, using for his entry, inspection and return any apparatus or machinery belonging to the owner, lessee or occupier of the mines, and may use all necessary means for discovering the distance from the said works to the parts of the mines which are being, have been, or are about to be, worked.