Not sure what to do

First of all, please use punctuation. It's extremely hard to read your text. Secondly, in my opinion, get a letter from the owner of the company on company letterhead stating that he was the lawful owner and transferred ownership of the material to you. Fancy speak for he had the right to give it to you legally. Then sell it. That should cover you legally if there are consequences later.

But, if this was brand new copper wire from a job site, why aren't you trying to sell it to another job site to be used as copper wire? Why scrap it at all?