[Closed] What to do with loads of old screws / nails / nuts / bolts?

I've recently had a large number of the aforementioned come into my possession. There's probably 10 or 12 buckets full.

Any ideas what i should do with it? Will i even get the fuel money back if i weigh it in? (There's perhaps 100kg* of it)

*this figure is entirely made up...