Tear Pattern News Today

Piece of duct tape from the roll, and the fibers leave a distinctive tear pattern at the end, which often is as unique as a fingerprint. >> its called a fracture match exam, and its a type of exam where you -- its like a forensic puzzle. try to put the pieces back together to see if at one time they were a single piece. >> wallace used a high-powered microscope to compare the end of the roll of tape found in garvins garage to the ends of all the pieces found with shirleys body. and she discovere...

Wounds to the head. >> i absolutely thought i was just going to crumble. and i felt greater loss than ive ever, ever felt in my life. >> but police found no evidence that mike owned a .22 caliber pistol. in mikes garage, however, police found three rolls of duct tape which were sent to fiber expert donna wallace. >> i was able to rule out two of the rolls of duct tape, because it had visual differences from the tape on the bags. it was slightly different in color and it had indentations along th...

Roll, and the fibers leave a distinctive tear pattern at the end, which often is as unique as a fingerprint. >> its called a fracture match exam, and its a type of exam where you -- its like a forensic puzzle. try to put the pieces back together to see if at one time they were a single piece. >> wallace used a high-powered microscope to compare the end of the roll of tape found in garvins garage to the ends of all the pieces found with shirleys body. and she discovered that the ripped end on the...

8:00, i just think its fascinating that even with small pieces of debris or even a large piece, if in fact this is a piece of the plane, you can start to understand what actually happened to the aircraft, even without finding the aircraft itself, depending on where the pieces are from, correct? >> thats right. depending on the pieces, where theyre from, whats on the pieces, the tear pattern, the force pattern, whether theres any residue on them, any burn marks. ntsb investigators and others are ...

Pieces of debris or even a large piece, if in fact this is a piece of the plane, you can start to understand what actually happened to the aircraft, even without finding the aircraft itself, depending on where the pieces are from, correct? >> thats right. depending on the pieces, where theyre from, whats on the pieces, the tear pattern, the force pattern, whether theres any residue on them, any burn marks. ntsb investigators and others are very good at picking up the clues and every piece can ho...