Shipping Crate Bolts, Long or Short Iron?

Ok guys, I'm picking up a few hundred pounds of these sometime next week. They are bolts off of international wooden shipping crates that come from China. I'm wondering if these would go as long iron (Shred) or short iron/cast? There is also a lot of washers/nuts/thick springs mixed into the mix. There will also be a auger for a tractor going in with these so I'm hoping that will go at short price or torch material or some kind of higher price. I don't deal with a lot of heavy stuff like this, so if y'all could give me a quick answer to this, I would really appreciate it. Thanks guys.

Dikes for size:
http://i1062.photobucket.com/albums/...ps161fa5eb.jpg
They are like 1/2" - 1" thick.

short iron = 3ft or less