Waterworks Clauses Act 1952

If the working of any such mines under the works of the undertakers or within the distance therefrom mentioned in section sixty-five is prevented by reason of apprehended injury to those works, the respective owners, lessees, and occupiers of mines may cut and make such and so many airways, headways, gateways, or water levels through the mines, measures, or strata the working whereof is so prevented, as may be requisite to enable them to ventilate, drain, and work any mines or minerals on each or either side thereof, but no such airway, headway, gateway, or water level shall be of greater dimensions or sections than the dimensions or sections prescribed by the special Act, or if no dimensions are so prescribed shall not exceed 2·5 metres wide and 2·5 metres high, and shall not be cut or made upon any part of the works so as to injure them.