What is the material left after the explosive filler has been removed called?

The material left after the explosive filler has been removed is referred to as munitions residue. This term encompasses any leftover materials from munitions following their use or processing, particularly after the explosive components have been extracted. Munitions residue can include any fragments, casing materials, or any residues left behind from the explosive charge.

While explosive remnants typically refer to the remnants of unexploded ordnance, such as bombs or shells, safety waste is not a standard term used to describe materials leftover from explosives. Residual munitions may imply items that still possess explosive potential, which is not the case once the explosive filler has been removed. Therefore, describing the leftover material as munitions residue accurately captures its status and nature.