SOURCE OF SUBMERGED NETSTAKES IS UNKNOWN.  THEY APPEARED ON THE FIRST ARCHIVED EDITION PRINTED IN 1976.
  F00500--  OPR-Z486-NRB-04, JULY 2004;  WHILE INVESTNGATING AWOIS ITEM 12514, NET STAKES WERE SEEN ON SSS.  RECOMMENDED TO RETAIN CHARTED NET STAKES