For better ascertaining whether any mines lying under land acquired in accordance with he provisions of this Act arc being worked, or have been worked, or are likely to be worked so as to damage the land or the works thereon, an officer appointed for this purpose by the appropriate Government may, after giving twenty-four hours notice in writing, enter into and ret urn from any such mines or the works connected therewith; and for that purpose the officer so appointed may make use of any apparatus or machinery belonging to the owner, lessee or occupier of the mines, and use all necessary means for discovering the distance from any part of the land acquired to the parts of the mines which have been, arc being, or are about to be worked.