my father-in-law makes pickles without vinegar, using only a sea salt brine. (it's an old family recipe, apparently.) we are going to get the recipe from him today because we have a WHOLE bunch of red runner beans from our garden that need to be preserved.
i don't know if they would count as raw if they are cured without vinegar, but i know it is possible. i'll post the recipe once we have it, if anyone is interested.