Thanks guys and gals,
I went back there yesterday and this evening and pounded 'er again. I hunted the immediate area I found the plate in yesterday and didn't find anything. I hunted from after work until dark and started making my way back to the truck. I am hunting a subdivision site that has been graded a lot. My strategy has always been to look for the undisturbed darker dirt and hunt there while skipping over the reddish clay dirt that has obviously been scraped off with the dozers. I just happened to hit one little area of the dark dirt that had the plate and a few bullets in it the other day. The plate was all of 2" deep. Yep. Two inches.
Well anyway back to my story...on the way to the truck the other day I have to pass over this one big football size area of red clay ground that has been scraped. I always have gone around it and never hunted it. Yesterday I kept the machine on and just lazily swung the detector on a brisk pace to the truck. I got a good signal and stopped to dig a drop 3 ringer. A few feet away I dug a drop Spencer bullet. It was too dark to dig by then so I was anxious to get back there today. And that I did. I pulled 4 more drop 3 ringers out of there and one drop round ball and a brass ring. I only covered about half of that area so I'm confident there are probably more there.
