Mr. Rawles, this started out as an entry for your preparedness articles writing contest. Unfortunately, it took a different turn and I don’t have the time to devote to it. The value of my research is these pictures. See: http://www.curevents.com/vb/showthread.php?p=169180#post169180 [1] I hope you enjoy! – Johnny, a.k.a. swampthing