law: Land Acquisition Act, 1894
  4. Publication of
  
  preliminary notification and powers of officers of there upon: -
  (1) Whenever it
  
  appears to the appropriate Government that land in any locality {Ins.by Act.38
  
  of 1923, s.2.} [ is needed or ] is likely to be needed for any public purpose,
  
  a notification to that effect shall be published in the Official Gazette, and
  
  the Collector shall cause public notice of the substance of such notification
  
  to be given at convenient places in the said locality.
  
  
  (2) Thereupon it shall be lawful for any officer, either generally or specially
  
  authorised by such Government in this behalf, and for his servants and
  
  workmen.-
  to enter upon and
  
  survey and take levels of any land in such locality;
  to dig or bore into
  
  the subsoil;
  to do all other acts
  
  necessary to ascertain whether the land is adapted for such purpose;
  to set out the
  
  boundaries of the land proposed to be taken and the intended line of the work
  
  (if any) proposed to be made thereon;
  to mark such levels,
  
  boundaries and line by placing marks and cutting trenches' and.
  where otherwise the
  
  survey cannot be completed and the levels taken and the boundaries and line
  
  marked, to cut down and clear away any part of any standing crop, fence or
  
  jungle:
  Provided that no person shall enter into any building or upon any enclosed court
  
  or garden attached to a dwelling-house (unless with the consent of the occupier
  
  thereof) without previously giving such occupier at least seven days' notice in
  
  writing of his intention to do so.