Most yards use the old "
magnet test" and it is the easiest.
BTW, I got a surprise earlier in my experiences, when "stripping out" a chest type freezer.
I was "digging around inside the walls and came across some of the "prettiest copper tubing". I got excited and started stripping out and came out with about 40 feet of this stuff.
Imagine my surprise when I got to the yard and found out it was just "Copper Clad Steel" and not worth the extra effort of digging it out of that old freezer.
BOY, did I fell stupid for not checking it with my magnet.
Remember, "all that glitters, is NOT gold" or in my case "copper", LOL!
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