On Tue, 26 Sep 2006 20:52:28 +0100, "simon"
wrote:

I should also add..

Problem with a grappling hook is I'm reluctant to let people go throwing one
down the pit.
There are pumps, cables and walkways down there..
We could be in the situation of trying to retrieve an item off a walkway
where a grappling iron would probably get stuck.. also I'm fearful of it
damaging something - I thought a lightweight telescopic pole with a hook on
t he end would give more control.

may I need to go looking at Fishing poles...

Here's another idea. Someone, I know not who, makes very long telescoping
devices for changing light bulbs in high ceilings. I've seen one that is at
least 25ft long used at our church. I'm sure one could easily be modified
with a hook to meet your purpose.