I found some rail carts in an old quarry. The quarry was worked from 1790 - 1969.

First I found a graveyard of rail carts:



They look promising especially the coupling hooks:





And the lifting eyes:






All in all a productive day out. I'll be back with a cordless grinder soon.

A lot of that is very likely wrought iron and not steel. Would be worth salvaging if you can.

Half the fun in hobby blacksmithing is the scrounging so I say to heck with it being wrought or not, I'd be giggling to whole time I was cutting them apart.