The failure was investigated by the National Park Service with assistance from Chris Harmston, Quality Assurance Manager at Black Diamond Equipment. Harmston concluded that a change in jump site angle probably caused the main jump rope, which consisted of several ropes tied together, to cross and catch on itself at a knot during his fall. This caused the rope to cut itself by melting. Harmston also noted that Osman's rope was in excellent condition, despite it having been left outdoors for some time.