Column 4
The following explanations apply to the columnsin Table B.3.
The preblastelevation of reference mark
Column 1
The station numbers are for Operation Greenhouse.
(R.M.) was taken at a point indicated in the foregoing sketch, on the 3-in. steel plate.
Column §
The postblast ground elevations were taken
17 July 1951. Station 27a was not located at
Column 2
that time.
The distance of working point to Ground Zero
is indicated in the following sketch.
128°
128°
Column 8
‘
|
9
=
°
w.P.
|___g-
The postblast distance of the working point
.
to Ground Zero was taken to approximately the
same point ag the preblast distance. All four
aM
M.
concrete blocks were damagedbythe blast.
°
—— - — TOGROUNDZERO
Column 7
bre Q.73' eof
.
S
The postblast elevation of the reference mark
(R.M.) was taken to a point on the concrete block
approximately 0.73 ft from the working point.
'
~
The steel plates were missing from all four
|
stations.
/
TABLE B.3 CRATERSURVEY,SITE C
Prebiast
To Ground Zero
Elev.
Station
Distance
(ft)
Azimuth
of R.M.
(ft)
(1)
(2)
(3)
(4)
27a
27b
27e
27d
12.00
68.97
170.94
240.00
83°S0'02”
83°50'029
83°50'02"
83°50’02”
9.32
9.42
9.47
9.04
31
27