Hi Marshall, try "Basalt"; it may contain some bauxite - 15%, but
usually the ocean floor basalts have less than that.  Since basalts have
a S.G of ~3 as a solid, the rest of your post is right on.

Take care,
M.

On Thu, 2010-05-13 at 10:36 -0400, Marshall Dudley wrote:
> The density of bauxite is approximately 3, which means that one square 
> inch will have a mass of .43*3=2.1 pounds mass per inch, and 26-27 
> pounds per foot.  So 20,000 pounds of pressure would require a column of 
> bauxite 770 feet deep.  Anything less than that would simply get blown 
> right off.  In actuality since it is a mile or so under water, it would 
> take less than that since the water would add weight above it, but it 
> would still take a substantial amount to hold it down.
> 
> Marshall
> 
> Garrick wrote:
> > How many holes are you going to drill. Six with six charges? I think 
> > it is best to go deep for any explosions because the oil/gas is so 
> > high pressure it will make its way past 20 feet of rubble. Even done 
> > your way
> >
> > I wish a real nuke expert would give an opinion to the media but I 
> > think there is such a nuke-phobia it wouldn't be used even if it was 
> > proven to be the best course. I rather nuke it if that's a good way to 
> > go than see oyster beds and fishing grounds fouled for 20 years
> >
> > I wonder what Edwin Teller would say.
> >
> >
> > g
> >
> >
> >
> >  
> >
> > On Tue, May 11, 2010 at 3:34 PM, Malcolm <s...@asis.com 
> > <mailto:s...@asis.com>> wrote:
> >
> >     Garrick,
> >
> >     the idea of the small shaped charges is to surround the pipe with them
> >     and blow it closed, or at least down to a dia. where it could be
> >     capped.
> >     Blowing the whole thing even wider is not a good idea, and
> >     anything on a
> >     scale you envision would probably produce cracking and widen existing
> >     faults which would lead to a catastrophic impossible-to-control
> >     blowout
> >     of the entire pocket.  Wrong way to go.
> >
> >     Malcolm
> >
> >     On Tue, 2010-05-11 at 13:32 -0400, Garrick wrote:
> >     > Hi
> >     > I'm no engineer but I think a very small nuke is what you need to to
> >     > collapse the well from a hole bored side by side with the gusher
> >     hole.
> >     > Drill down a few hundred feet and detonate. I doubt 3-4 lbs of
> >     > conventional explosives will do it unless inserted directly down the
> >     > well which sounds impossible to me. This is a very high pressure
> >     well.
> >     > I could swear I read was drilled through basalt to get to the
> >     oil but
> >     > can find nothing on the internet about basalt
> >     >
> >     > I want that nuke to cap that well by destroying it. If that oil
> >     > reservoir is tapped again BP will have to drill a new
> >     hole....Hey it's
> >     > doing that anyway right now. Two of them
> >     >
> >     > g
> >     >
> >     > _______________________________
> >     >
> >     >
> >     >
> >     >
> >     >
> >
> 
> 
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