More email like this keeps pouring in:

Jonah,
The answer is the same as why we don’t have nuclear attack submarines that
can sail two miles below the surface of the Pacific – pressure increases
with depth. In rock, both pressure and HEAT increase with depth. Get in
touch with someone from the American Petroleum Institute and ask them what
the temperature and pressure is at some of the lower wells drilled in the
Anadarko Basin – it’ll astound you. Rock at that temperature is ‘elastic’
– it will actually flow. At a depth of between 8 and 40 miles, it’s a
thick semi-liquid mass that’s in slow but constant movement (that’s why,
when the Indus plate slipped down under the Burma plate, it will eventually
cause the earthquakes on the backbone of Sumatra to erupt – an eddy current
will form, increasing the heat in a narrow zone along the new bottom edge
of the subducted plate – ask a geophysicist or geomorphologist).
We don’t have a submarine that can withstand the depths two miles down. We
certainly don’t have the capability now to build machines that can work two
to six miles under the earth’s surface through solid rock!