(1)The Secretary or any person authorised by him in this behalf may, with or without assistants or workmen, enter on any land adjoining or within fifty metres of any work authorised by this Act or by any rule, bye-law, regulation or order made thereunder, for the purpose of depositing on such land any soil, gravel, stone or other materials or of obtaining access to such work or for any other purpose connected with the carrying on the work.