Boomerang, Six Flags Marine World, San Fransisco, CA, USA

Riders were stranded in 100 degrees Fahrenheit heat when the ride malfunctioned due to technical problems.

Drop Zone Stunt Tower, Paramount’s Great America, Santa Clara, California, USA

A 12-year-old boy fell out of this 224 foot (68m) tower ride. The exact cause of boy’s fall and subsequent death is unknown.

Tornado, Lake Compounce, Connecticut, USA

A 16-year-old employee got caught from the waist down underneath a train and died in hospital from his injuries.

Thunder Bolt, Kennywood, Pennsylvania, USA

Thirty-five people were injured when two trains collided on the classic wooden coaster.

Super Himalaya, Coney Island, New York, USA

A 17-year-old woman was killed and 8 others were injured when a train left the track, flipped and fell 15 feet (4.5m).

Superman: Ride of Steel, Six Flags Darien Lake, New York, USA

A man suffered slight injuries when he was ejected mid ride.

Thunder Road, Carowinds, Charlotte, North Carolina, USA

Seven people were injured after two trains collided following a brake failure.

Roaring Rapids, Six Flags Over Texas, Texas, USA

One woman drowned and 10 others were injured when a boat capsized trapping passengers underneath.