converting a storage box into a cargo box

[Frank S]

If this would be for DOT approval wouldn't the metal and metal lashing be a sparking source? Also it the caps came in a metal ammo can. Would it not be better to have gritty spray in bed liner that is higher then the connection points so that there is no way for metal to metal spark? Like with ammo crates/cans needing to be on a pallet so that they are not causing metal to metal friction as an ignition source. The load bars could be coated with bedliner to also prevent metal to metal contact. But also I think with seperate compartments completely enclosed from each other also might meet DOT, I would double check.

To answer a few of your questions the uses for this cargo box is not for class A explosives, therefore none of the DOD Ammo and Explosives regs apply.
So far as the DOT is concerned as long as all contents within an enclosure or on a flatbed vehicle are properly secured with a minimum quantity of approved securement devices and if hauling anything hazmat requiring placards the proper placards are displayed in the proper places, then the DOT could care less, providing you do not mix and match certain items on the same vehicle or unit.
Some things cannot be hauled in or on the same trailer, truck, buss, or aircraft no matter how well they are compartmentalized
The need to rubberize or coat the metal within the containers has never been an issue the Load bar I had in the picture was there just to show the possibility of being able to utilize them as an additional means of securement should the need arize.
Now I need to make a correction to my first post.
I mentioned a couple things in err. You can haul the guns and the igniters on the same vehicle, or you can haul the igniters and the detonators on the same vehicle but separated. you cannot haul the guns and the detonators on the same unit. so the cargo box instead of being made to haul the ignitors it is for the detonators, Sorry for posting this incorrectly. the cardboard boxes the detonators come in are about 6x7x5" I have one of the empty boxes and up to about 72 to possibly 80 of these boxes of that size could be packed into the cargo box I converted. a pallet of the ignitors can range from 3ft by 4ft by 2 ft high to 4ft by 4ft by 2 ft high so those go inside of the much larger drome box mounted on the trailer.
My friend and I have spent the past 3 months researching work arounds to the haulage regulations. At one time A&E from the DOD tried to get involved inserting their 2 cents worth of BS. They stated and drome box on the tractor had to be x,y,z, in size but they were quoting regs for Class A explosives as if the box were to be used to haul ammunitions or high explosives which it will not. However, there were a few things we still needed to address like the box had to have provisions to secure any content it had to be watertight lockable doors with a way to attach a metal or plastic inspection seal. These alone rules out the possibility of using a bargin basement storage box such as you might fiind at Tractor supply or Northern tool, the box alone cost nearly $1,500.00
Here it is mounted and ready to go for inspection and approval