I found a bottle dump when I was about 7 or so, and my brother and friends of mine spent hours upon hours digging that place. Finding my first milk bottle with the creamer still intact was a huge rush. On top of that we were pulling bottles from a local soda company and the family that used to own the company used to pay us $10 a whack for the bottles that they could still read the embossing on. Sunshine cola if I remember correctly. I'm heading back to that property this fall once the weeds die off to dig some more and detect there.
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(Pic is not of a bottle found by me, but a representation)