Jón Frímann wrote:
> Hi
> 
> I have started makeing the seismometer vault, I did start to dig the
> hole this morning. Unfortunaly it started to rain so I had to stop
> digging. I have dryed up the sand, that did go farly well.
> 
> Regards.

I'd be tempted to pot the geophone in neutral cure silicon rubber.

There are special formulations available which are quite friable (crumbly) when
set in case you ever need to remove it.

Other useful materials include self-amalgamating Poly-Iso-Butylene tape (3M
'23' tape, available from electrical wholesalers) and a favourite among New
Zealand antenna engineers, lanoline grease from sheep's wool (Lanocote).

Cheers
Mark

-- 
27 Oct 1728 James Cook born.
27 Oct 1782 Niccolo Paganini born in Genoa.
27 Oct 1854 Mormon missionaries first visit New Zealand for 3 weeks preaching
27 Oct 1959 Soviet Lunik III spacecraft takes photographs of the dark side of
            the moon.
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