A leaking tank full of molasses (think honey but really dark and thick) burst sending a huge wave of molasses that trapped several people. It traveled as fast as a tsunami and drowned 21 people.

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The fire at the Triangle Waist Company in New York City, which claimed the lives of 146 young immigrant workers, is one of the worst disasters since the beginning of the Industrial Revolution.

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The Thredbo landslide occurred at 11:40 pm on 30 July 1997. Part of a road embankment slid down the steep hillside into the ski resort village of Thredbo, in the Snowy Mountains in New South Wales. Approximately 2000 cubic metres of rock shifted below the Alpine Way.
The landslide pushed Carinya Lodge off its foundations onto Bimbadeen Lodge at high speed burying the 19 victims under metres of rubble. The harsh environment, as well as the steep incline of the hill and instability of the land all made the rescue operations difficult.Eighteen bodies were recovered and one survivor was rescued from under debris more than 60 hours later. Subsequent investigation found the cause of the landslide to be a leakage from the water main leading to the saturation of the fill embankment on the road
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