Enhanced shipping container lock box

The shipping container with a completed lock box. 
 Shipping containers can be both helpful and harmful when it comes to the storage of tools on a remote location.  On the one hand, a container provides a relatively low-cost, sturdy, lockable, portable, and weather-proof place to store tools and equipment.  However, because they are known for their use as tool storage units, shipping containers can also be an irresistible draw to thieves.  The default locking mechanisms on these containers are no match against a pry bar or a portable grinder.  For this reason, my first improvement to a shipping container I recently purchased has been to fabricate a lock box for it.

The lock box system, which is basically a shrouded hasp, is welded directly to the container doors.  Attached to one door is a steel box with an open bottom and on the other door is a steel shroud designed to protect the box from prying. 
The back side of the steel box has a narrow slit through which a piece of steel welded to the other door passes. 
As the container doors are closed the different parts of the system fit snuggly together.  A padlock can then be fitted over the hasp inside the box. 
The lock box with lock in place.

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