
 HISTORY
  CL552/78--CAS18661(1977)-OPR-511-DA-77-ITEM 11, (BP103691); ì
VISIBLE WK (COV W/TREES), TEMPORARY TRIANGULATION "BIG BREAK 4", ì
POSITION GIVEN IN LAT 38-01-01.36N, LONG 121-43-36.34W(NAD27).
  TP01059/79--REV-CLASS III; VISIBLE WK (APPROX