Howdy jabbo--
I think that it is a good thing to recycle dug scrap. We clean up the environment, stimulate the economy and by removing metal targets from our hunting sights it unmasks the good finds. Whenever my beautiful wife has consumed enough Coors Light, I squash the cans and clean up my scrap. I volunteer as a Meals-On-Wheels driver and on the way back to the center I pass by the highest paying scrap yard in my area. It's usually a 5 or 10 minute detour. Here in Texas, because of copper theft, we have to show our drivers licence and we are photographed. I recycle the Coors Light cans, brass and copper. The lead that I dig, I give to a friend of mine who molds rounds for his cannon.
It's important to get the best prices for your scrap to separate the metals. I always check the scrap with a magnet to insure that the copper is only copper and the brass is only brass. Also, if there is caked on dirt, I hit it with a wire brush. I don't want to be paid a discounted rate for "dirty brass" or "dirty copper". I would also suggest that you weigh it yourself before taking it to the scrapyard. I'm not saying that you would be cheated but...
Here are a few receipts from the recycling aspect of my detecting hobby. Best of luck and...
Happy Hunting!
Blind Squirrel