This course was training out of cave. We used tree or rock of side of gorge.
We was training concerning basic cave rescue techniques.
This course participant was 5 person , it was member of Edogawa Caving Club , Kameido Caving Club and Pioneer Caving Club.
In case of surface pit , we make anchors|
for hauling by tyrolean bridge over a entrance.
We haul victim by Z-rig or counterweight system .
These system use anchors on tyrolean.
If stretcher can't pass narrow
passage, we need digging passage.
We have some ways .One of ways is
explosive. But this ways is
difficult owing to Japanese law.
Other ways is wedge. We make a
hole (16mm diameter, 150mm depth)
by electric drill. And so drive
in a wedge in this hole.