Exxon Valdez had only recently departed the Valdez Marine Terminal when the captain, Joseph Hazelwood, left Third Mate Gregory Cousins in charge of steering the vessel while he retired to his quarters.
The Brunner Mond chemical factory had been built in 1893 to manufacture caustic soda and soda crystals.
21 people were killed and a further 150 were injured after 2.3 million gallons of molasses swept through North End in Boston, Massachusetts after a storage tank collapsed.
At 9.15am on the 21st October 1966, 116 children and 28 adults were killed when a colliery spoil tip above the Welsh village of Aberfan collapsed.
10th April 2021
8th April 2021
11th November 2020
1st September 2018
9th November 2019