
 HISTORY
  LS1687/36--VISIBLE PILES; SCALED AT 1:20,000 IN LAT 46-24-57.5N, LONG         
84-33-59.7W.                                                                 
  TP00204/82--REV. CLASS III; "NOT VISIBLE ON PHOTOGRAPHS" (ENT. 4/85 RWD)
  H10