Section 1356. Investigations

The authority, and any member thereof, when
  directed  by  the  authority,  may  make  any  investigation  which  the
  authority  may  deem necessary to enable it effectually to carry out the
  provisions of this act, and for that  purpose  the  authority,  or  such
  member, may take and hear proofs and testimony and compel the attendance
  of witnesses and the production of books, papers, records and documents,
  including  public records. The authority, and its authorized agents, may
  enter upon any lands as in its judgment may be necessary for the purpose
  of making surveys and examinations to accomplish any purpose  authorized
  by this act, the authority being liable for actual damage done.