Thunderation, Silver Dollar City, Branson, Missouri, USA

A male employee died from blunt force trauma while working at the park. It believed that the incident took place while performing maintenance on the Arrow Dynamics mine train coaster. Source

Cobra, Tivoli Friheden, Aarhus, Denmark

A 14-year-old girl died when the last car of the Sartori Energizer inverted coaster detached from the track and was left hanging under the rest of the train, leaving several people trapped. The park decided to tear down the coaster following the tragic accident. Source

X2, Six Flags Magic Mountain, Valancia, CA

A 22-year-old man collapsed on his way off the Arrow Dynamics 4D coaster and was later pronounced dead at the hospital from head trauma. Source

Water Slide, Kenjeran Park, Surabaya, Indonesia

An overloaded water slide snapped in half and crashed 30 feet (9 m) to the ground. Of the 16 people who were trapped inside the slide, eight were taken to a nearby hospital and three of them suffered broken bones. The park said that the attraction had worn out and weakened over time. Source

Giant Wheel, Gillian’s Wonderland Pier, Ocean City, New Jersey

A 62-year-man fell to his death from an aerial mobile lift while repairing the 144 feet (44 m) tall Jersey Shore Ferris Wheel. The subcontractor had finished working on the attraction and was beginning to lower and relocate the lift when the concrete that it was parked on gave way. Source