Not completely true.
If the sarcophagus is properly sealed the ground water will eventually push it to the surface. The sarcophagus will literally float to the surface.
It may take a few decades but given that New Orleans is river delta land and has high ground water probably not too long.
I thought all the bodies from Katrina were moved to the morque they built in St. Gabriel?
I can see the new morgue from my plant.
mmm, good point about the buoyancy, Pontiac
the city's first cemetery (I do not recall its name), its second (St. Peter Street Cemetery), and the St. Louis cemetery all have below ground burials. St. Louis was the first to convert over to above ground burials, for the dual reasons that it was lower than the first two cemeteries (and thus more prone to casket flotation) but also because there was no longer any more room in the cemetery for below ground burial. The water table today in NO is lower than it ever has been due to pumping; below ground burial isnt an impossibilty, but it still carries the rather gruesome risk of bodies coming loose if the city ever floods again. However, there is a burial technique, whereby the entire grave is given a concrete liner and sealed, that can prevent flotation; this was used in St. Louis Cemetery successfully but can be prohibitively costly. So I guess I was trying to point out that below ground burials are possible with technical advances and the subsidance of the water table, but, yes, they still probably arent a good idea if even only due to space concerns.