re: Is this cast iron worth salvaging?

I'll try this soon on two Dutch ovens I need to restore cheers:

i know someone who saved a big pot that was under water in katrina. he said he used a "angle grinder"then just seasoned it like a new pot.

That pot is good. Clean it up good with a wire wheel on an electric grinder and then start the curing process. I've always fried foods in my new cast pots that size for the first few years I've owned them to start a good seasoning cure.