[alancarp]

I'll answer my own question: there's a major facility at Pascagoula, Mississippi.

[Diddle E. Squat]

Forgot to answer your actual question. Don't know about offshore, but there are petrochem complexes all up and down the Mississippi River in LA between New Orleans and Baton Rouge. More in Lake Charles and Beaumont.

[Palladin]

Looks like a sitting duck for Katrina.

I think the worstof this storm is going to happen to N.O.
this time. Law of averages.