Page 141 - Moving the Earth_ The Workbook of Excavation
P. 141
ROCK, SOIL, AND MUD
ROCK, SOIL, AND MUD 3.35
FIGURE 3.26 Posthole and relief loading.
Placing Explosives. Shallow placement of explosives in mud may be achieved by pushing them
down with a stick, or first punching a hole with a crowbar, then using the stick. For deeper work
the apparatus shown in Fig. 3.29 is effective. A plain piece of iron pipe of the necessary length is
used for a casing, and a round wood pole or a plugged iron pipe making a loose fit serves as a core.
The core is set in an iron handle larger than the casing and long enough for a good two-handed grip.
