The investigation following the autopsy led to significant safety changes at Disneyland. The America Sings attraction was closed for two days while engineers installed safety sensors and breakaway walls. These sensors were designed to immediately cut power to the rotation if any object or person entered the clearance zone between the walls.
: Investigators found that Stone may have fallen, stepped backward, or attempted to move between stages as the walls began to revolve. A contributing factor was the attraction's clockwise rotation; the previous attraction in that building (Carousel of Progress) rotated counter-clockwise, meaning the safe standing positions for employees had changed. deborah gail stone autopsy report
: An audience member heard her screams and alerted staff, but she was pronounced dead at the scene around 11:00 p.m.. Impact and Safety Changes The investigation following the autopsy led to significant
The accident happened during a transition between musical acts. As the theater walls began to rotate, Stone was positioned near the narrow gap where the moving stage wall met the stationary proscenium. In a moment of either miscalculation or a loss of footing, she was pulled into the 6-inch gap between the moving wall and the fixed structure. The force of the massive rotating machinery crushed her against the stationary wall. : Investigators found that Stone may have fallen,