Joined: Feb 20, 2011
Location: Moving to: NE Washington USDA zone 5 Western steppes to the Rockies
Rub them with Coca Cola. The phosphoric acid will eat the rust (slowly).
After they are clean, I would wash them, then dry on stove top.
They should then get a good rubbing with lard (or the fat/oil of your choice).
They may need a reseasoning, depending on how bad they got.