Column 3
The following explanations apply to the columns in Table B.6.
Distance is from working point to Ground
Zero.
Column 1
Column 4
The station numbers are for Operation Greenhouse.
Elevation taken on corner of coverplate,
Stations 27a to d, except as noted; on foundation of Stations 121a to e.
Column 2
Column 5
Azimuth is reckoned at the station clockwise
from North to Ground Zero.
as preblast elevation.
TABLE B.6
Elevation taken at approximately same point
CRATER SURVEY,SITE E
W.P. to Ground Zero
Station
Azimuth
Distance
(ft)
(1)
(2)
(3)
27a
27b
27c¢
27d
121a
121b
121c
121d
121le
191°38’16"
90°00'00"
73°39'12"
73°39'/129
96°00’00*
116°00’00"
136°00'00"
156°00'00”
176°00'00"
12.00
69.00
171.00
. 240.00
175.00
175.00
175.00
175.00
175.00
* Cover gone; elevation on concrete block.
37
Preblast
Elevation
(ft)
(4)
7.57
7.19
7.71
8.38
7.52
7.44
7.34
7.43
7.47
°