     
HISTORY
H8524--NOS,ECFP-10-1-60; BOILER ADDED FROM SUBJECT HYDRO SHEET. THE DESCRIP- ì
 TIVE REP. STATES "APPEARS TO BE REMAINS OF A WK. USED AS A SIGNAL ON H2939 
 (1908)AND BEARS NO RELATIONSHIP WITH HEAVY IRON OBSTRUCTION ON H6686(1941) 
 ON