Figure 17. Photomicrographs of Engebi beach sand on ashing
plates counted May, 1953.
Magnification 23x,
except for A and D which are
&x.
n
Photo c/m
Description or remarks
A
1,970
B
1,680
D
1,130
E
3,300
F
1,160
G
2,900
H
2,900
I
4 ,000-5,000 estimated using end window survey meter.
J
1,400
K
1,900
L
8,000
C
930
M
2,000
N
0
P
7,800
450
6,000
Q
1,300
R
300
Entire sample weighing 6.2 mg typical of plates
1 through 100.
White sphere from upper right portion of A.
Another white sphere fused to a larger irregular
particle.
Most of sample showing sphere of C near bottom.
Central, white sphere bearing two protrusions.
Total plate 3,800 c/m.
White sphere fused to irregular particles. Total
plate 2,900 c/m.
Spheroid with equatorial protrusions.
3,200 c/n.
Total plate
Other side of same particle (G) showing a dark
inclusion.
Fragments of a white, hollow sphere broken in
handling. Total plate 5,500 ofa.
Three irregular particles.
Total plate 2,100 c/m.
Central, white sphere with protrusions.
plate 2,200 c/n.
Total
Hottest" particle encountered; sphere with pro-
trusion.
Plate 8,600 c/n.
Irregular particle with heat~smoothed appearance.
End view of mottled, gray cylinder lmm long.
Unsmoothed, chalky fragment.
Particle with heat-smoothed appearance of upper
surface.
Mottled, irregular particle.
Eight particles some of which were suspected of
being radioactive from their appearance,but which
gave no reading on end window survey meter.
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