204 University Geological Survey of Kansas. 
SEED ATS 
YW ~- 2 4 OR 
~~ Ee AE S 
~<A = 
ZG eet rey = 
SS _ SONS SES ECU 
Bs <a shh SEA S Z 
x = v “1d TREN i 
=~ By Sea = FZ 
Zz ja ute 4a ae 
Zo Yet 3 wd = 4S 
=F pena, 18, 1A = = 
ae SZ 1B ral Ac <a 
—~ _ SQUIB Sse iY = Ne 
SS SS: 
Sa SA ee aS 
See ANSE ewes (ZZ. — zs 
<5 GRE iFS we 
iE >= Ais Z= sf 
= Zura ————— 
= ZAlf : 
— 27 YE { a g ne 
S ySIIOTTT cas = oe =) —_ 
> S77 jit ey 
Zoe ¥ H as \k 
Bia 5 Son Uy 
EKY i 
- ; : ‘¢ 
= = Gis pee 
aa Fy 
Sse Rane Sey 
ar) sere 
dt, Belay / a : 4 Ribs 
See ARON aS By 
ee ws Hes 
ee Y 
= (it = : ie. 
— iy SS Seen 
i 
~ or, Y == 
eS ae 
te — CPI | ee 
= —— ==F 
ae eT ————— ss 
ae SP _ SSS ESS 
= SSS 
Se ——— 
N= Gp 
Wow a =| 
—— 
A ==2)\\ Jes 
NS HOSS SSeS 
Fig, 23. An electrical see aca ee ES with primer inserted, and 
' blowing out through the hole, the hole is generally tamped 
full, unless it is an extra deep one. The squibbed cavity 
presents such a large surface to be acted upon by the explo- 
sive that little of its force is expended or wasted on the 
tamping. 
Electric primers or caps, which are fired by electrical fir- 
ing machines, are in common use. 
The method of introducing an electrical primer into a 
starter is shown at-A and B in figure 23, and a primer at C. 
This is not meant to represent a charge in place ready for 
firing, but simply shows the method of introducing the 
primer into the starter and the placing of the starter on the 
charge. 
As a general rule, ground that drills well shoots easy, and 
