 HISTORY
  H7797/50--CS-256; VISIBLE WK (SIGNAL DUD) POSITION SCALED FROM ì
SURVEY IN LAT 38-01-26.4N, LONG 121-48-05W(NAD27). WK IS APPROX 50M LONG ì
IN A N-S DIRECTION.
  TP01252/83-84--REV-CLASS III; ISLET SHOWN IN POSITION OF ì
PREVIOUS WK. (ENT