November 11, 2000 - 155 skiers die in a fire at Kaprun Ski Resort. The deadly chain of events was caused by a heater in the rear attendant's cabin that also affected the alpine station 2 kilometres above the tunnel.

June 18, 1998 - A train derails, killing 101 people. Each wheel and carriage had to be re-engineered and replaced as a result of the incident.

July 14, 1999 - A gigantic crane (Lampson Transi-Lift 3 nicknamed Big Blue) standing at 567ft toppled while manoeuvring a 450-ton roof section at Miller Park Stadium in Milwaukee, killing three workers and causing damage to the stadium.

June 29, 1995 - Seoul's posh Sampoong department store collapsed in 20 seconds with more than 1,500 people inside. Investigators discover secrets in the original blueprint that explain the collapse.

September 10, 1980 - A ship vanishes without any trace. The investigation took 20 years before the cause of the tragedy was determined beyond doubt.

November 18, 1987 - A fire kills 31 people at the Kings Cross station. Investigators spend months trying to explain the fire's unusual pattern which they determine, was started by a smoker's match.