Still, the National Transportation Safety Board had the blackened debris hauled to a hangar at the Greeley-Weld County Airport where investigators could pour over the pieces.

Three people were killed when one plane hit another. Alex Gilmer, 25, was in one of the planes and two brothers, Mark and Bob Matthews, were in the other.

The debris collected from the large crash scene easily fit into the small portion of the hanger that investigators opened for reporters Tuesday.

Investigators usually try to complete a 3-D reconstruction in wrecks. That was clearly impossible in this case.

"This is as close as we're going to get," said Jennifer Rodi, an NTSB investigator, as she walked inside the hanger.

On the ground, there was a burnt out propeller, one wing, a couple wheels and a mess of mangled metal.

All that just belonged to one of the planes. The only discernible piece left of the other was the tail.

This display has backed up investigators' original belief that the planes struck each other at a right angle.

On Monday, the NTSB released preliminary findings which stated that the tow plane was slowly ascending, the other plane was slowly descending. That plane had a low wing and it conceivably could have caused what in essence is a blind spot.

The wreckage has yet to confirm for investigators why the crash occurred.

"What the investigators are going to try and do is understand what the altitudes were or positions - relative positions - to each other, to see if, in fact, there was a blind spot that prevented one or both pilots from seeing each other until the very end, or right at the time of the collision," Greg Feith, 9NEWS aviation analyst, said.

The final report may not be out until the end of the year.

(KUSA-TV © 2010 Multimedia Holdings Corporation)