Rest Area 300m: The Rat & The Drainpipe.

Thursday, December 08, 2005

The Rat & The Drainpipe.

Water blasting is a good way to clean blocked culverts.
A "rat" which has forward and backward facing jets is fed up the pipe.
Some rats have a spinning vane that can cut tree roots.
A lot of water at about 2,500 lb pressure shifts most things.
Stones shotblasting your legs can be a bit painful.

It is a great activity to watch however.

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