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Originally posted by ANNED
Some old Dynamite boxes many pre 1920 boxes can have nitro soaked into the wood.
If you ever rub your hand on any stain in a old powder box and get a headache it may still have nitroglycerin in the wood.
In the case of your box it was a shipment for the military because its in a heavier then normal box.
Some one added the hasp later as old Dynamite boxes never had ANY steel or iron in them
Any nails used were always brass. this is why they used a dovetailed-box so that they did not have to nail it and had a stronger box by gluing it
Burning Dynamite in contact with iron will always explode.
But you can dispose of old Dynamite by burning it as long as there is no iron around.
extra dynamite means it was a mix of nitroglycerin and ammonium nitrate instead if nitroglycerin and diatomaceous earth.