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The type used on shirts and blouses. >> i called the investigator and i asked, where's the white sleeve that was on karyn's body? because i can see here in the crime scene photos that there's a cloth-covered button on that sleeve. i want that sleeve. >> scientists took a fiber from the button on karyn's blouse and placed it under a comparison microscope. >> both buttons were composed of a cotton-polyester mix. >> the next thing was to identify the weave patterns on both buttons. >> in this case, we had a simple one-by-one weave pattern, and that was consistent both with the button that was fou...

>> forensic scientist curtiss jones used tape to collect any loose fibers from the blanket that covered judy's body. using a comparison microscope, jones compared the fibers to see if they were similar. >> the three fibers, three different fiber types that made up the trunk liner, were also found on the moving blanket. >> but were the fibers in larry's trunk an exact match to the fibers from the blanket covering judy's body? to find out, jones used fourier transform infrared spectroscopy, a technology not available in 1978. and the result, the three fibers from the blanket were synthetic rayon...

Plastic insulation as it squeezed through the dye during the manufacturing process. this process makes the wire its uniform size. >> those marks will be part of -- on that plastic insulation for a number of feet before it changes dramatically. >> lined up on a comparison microscope, there was no doubt. the wire from both bomb sites came from the same source. >> in fact, that these were produced on the same forming dye at 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 same individual, this eliminated ...

>> shell casings from the crime scene and casings from the gun were examined with a comparison microscope. viewed side by side, the shell casings left no doubt the murder weapon was justin bullard's gun. >> the boots were mr. bullard's. the gun was mr. bullard's. the last phone call from the victim was to mr. bullard's apartment. >> but despite the overwhelming evidence, bullard not only denied he was the killer, he came up with the incredible tale that someone must have stolen all his things, committed the crime, then returned them. (dog) mmm, this beneful healthy weight is so good... i mean ...

Loose fibers from the blanket that covered judy's body. using a comparison microscope, jones compared the fibers to see if they were similar. >> the three fibers, three different fiber types that made up the trunk liner, were also found on the moving blanket. >> but were the fibers in larry's trunk an exact match to the fibers from the blanket covering judy's body? to find out, jones used fourier transform infrared spectroscopy, a technology not available in 1978. and the result, the three fibers from the blanket were synthetic rayon, and the three fibers found in the trunk were also synthetic...