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Asiana Airlines Flight 214 crashes at San Francisco International Airport

The Boeing 777-200ER crashed on final approach into San Francisco International Airport. Of the 307 people aboard, two passengers died at the scene, and a third died in a hospital several days later; all three of them were young women from China. Another 187 individuals were injured, 49 of them seriously.

Lac-Mégantic rail disaster

The Lac-Mégantic rail disaster occurred in Lac-Mégantic, Quebec, Canada, when an unattended 74-car freight train carrying Bakken Formation crude oil rolled down a 1.2% grade from Nantes and derailed downtown, resulting in the fire and explosion of multiple tank cars. Forty-two people were confirmed dead, with five more missing and presumed dead.

At least 42 people are killed in a shooting at a school in Nigeria

In 2013, gunmen attacked a secondary school in Mamudo, Yobe State, Nigeria, killing at least 42 people. Most of the dead were students, with a few staff members also killed.

The Piper Alpha drilling platform is destroyed

Piper Alpha was an oil production platform in the North Sea approximately 120 miles (190 km) north-east of Aberdeen, Scotland, that was operated by Occidental Petroleum (Caledonia) Limited. It began production in 1976, initially as an oil-only platform but later converted to add gas production.

The Hartford circus fire kills approximately 168 people

The Hartford circus fire, which occurred in 1944, in Hartford, Connecticut, was one of the worst fire disasters in the history of the United States. The fire occurred during an afternoon performance of the Ringling Bros. and Barnum & Bailey Circus that was attended by 6,000 to 8,000 people. The fire killed 167 people and more than 700 were injured.