CNN Forensic Files March 12, 2014 07:12:00
Extrusion mark, made during the examining process. this process makes the wire its uniform size. >> those marks will be imparted on the plastic element before it changes dramatically. >> looking at it on a comparison microscope, there was no doubt the wire from both bomb sites came from the same source. >> in fact, these were produced on the same diet, the same plant. >> they also discovered both bombs used the same glue and the same cotton string. since both bombs appeared to be made by the sam...
Source: archive.org