I was tooling around food storage sites and found this interesting page on storing beef without refrigeration. Essentially, you're drying cooked ground beef in a pretty straightforward three-step process and then storing it in preheated sealed glass jars, or plastic bags within food grade plastic storage buckets.
Here's the link to "Hamburger Rocks"....
CORRECTION: SINCE POSTING THIS A FEW DAYS AGO, A COUPLE COMMENTORS RAISED SERIOUS CONCERNS ABOUT THE SAFETY OF THIS PRESERVATION METHOD. SINCE I HAVE NOT TRIED THIS MYSELF, I'D ERR ON THE SIDE OF CAUTION AND SELECT ANOTHER METHOD. I'M POSTING THIS RETRACTION DUE TO THE LENGTH OF TIME THIS POST HAS BEEN LEFT UP...PLEASE DO NOT USE THIS METHOD BASED ON MY MENTION OF IT, SINCE I AM NOW UNSURE OF ITS SAFETY.