Sorry no pics and only a vague description.  I was more interested in the “rocket boxes” they had.

it's a big square box about 4'x4'x4'.
it sits on top of a pedestal made of box tubing that looks to be about 4” square tube.
they are heavy and designed to be moved with a forklift.

The lid is heavy and is locked in place with several locking cleats that can be removed so the lid comes all the way off.

I plan to stop at a little A. Surplus depot outside of McAlister OK the next time I am thru and pick one or two up to take to my farm.  They look like they would be great for general storage.  

Any thoughts on what they are or how much they should cost?

Engine container?

The only things that McAlister have for sale right now are 60 ammo cans.

Quoted: The only things that McAlister have for sale right now are 60 ammo cans.

30mm cans?