On Thursday, the 26th of April 1986, one of the reactors at the Chernobyl nuclear power station in northern Ukraine exploded. It was the most significant reactor failure in the history of nuclear power, a Maximum Credible Accident (MCA). The plant, just 20 km away from the town center, was made up of four reactor units each generating an output of 1,000 megawatts. The reactor in question exploded due to operational errors and inadequate safety measures and the meltdown was directly linked to routine testing on the reactor unit?s turbine generators. For the next eight months, 800,000 soldiers, miners, and civilians worked around the clock to ?liquidate? the radioactivity, building a ?sarcophagus? around the ruined reactor. It is thanks to these men that the worst was avoided; a second explosion, ten times more powerful than Hiroshima which would have wiped out more than half of Europe.