← All EvidenceDirectDirect Examination - David McCollam David McCollam Aloke Chakravarty
Physical Evidence
Lock-and-load mortar kit exemplar
McCollam identified the lock-and-load mortar kit as the largest firework he examined. Subject to his recollection, he estimated that one mortar contained about 35 grams of material and that a couple dozen would be needed to obtain a pound of explosive material.