I have an old fire door which has been removed and cut up but we are at a lost to what the black metal sheet like material is. The door is made up of wood and some Gyproc wallboards and an extra material. I plan to bag it up and take it to an asbestos tip if i cant identity the material. One person has said they doubt its asbestos as the plasterboard would be acting as the fire resistant material. I know it shouldn't have been broken up
Thanks in advance
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