1417 
Ht oy RAGS 
pve CQ.G PEN TON TE 
Wega 4 IN._DIAM. 
crubipg.| Gorta 4 IN, 
bike UNS . 4 ae pair. @ AN, 
eae estince 48N ; . | CNAME -m aun it tae 45. IN 
40,200 PS: } & lQ,200-PSb 
ents bg AOI 
a 
ALL TIMING MARKS 
ARE 100 MICROSEC 
. APART 
mar wo. 266-3 
ume 25Q GM. PENTOUITE 
oune 1/4 IN DIAM 
ourne cepts SIN. 
24 IN. OLAM. 
a 1 game cert — SIN 
= Re swomuoe cat tance 45.iN | Giance wicaice ovsvance 45.1N, 
% ~AOAG0PSt % 10,100 PSL 
pegeeame FR sa 
eee 
onaher anne iste 95IN ee 
PIEZOELECTRIC RECORDS SHOWING SURFACE REFLECTION “PHENOMENA 
FOR VARYING CHARGE ANDO GAUGE DEPTH AND A CONSTANT CHARGE-TO-GAUGE DISTANCE 
wi? /R = 0 216) 
YING DEPTH FROM 4 iN TO 7!N 
ssn a da Re deOU dL 
