9(1)If it appears that mines have been worked contrary to the provisions of this Schedule, the acquiring authority may give notice to the owner of the mines to construct such works and adopt such means as may be necessary or proper for making safe the undertaking, and preventing injury to it.E+W
(2)If the owner of the mines does not comply with the notice, the acquiring authority may themselves construct the works, and may recover their expenses from the owner by proceedings in the High Court.