[2] On 15 December 1952, a landslide with a volume of 5,900,000 cubic metres (7,700,000 cu yd) on the slope of the mountain Niiortuut 30 kilometres (19 mi) from Qullissat generated a tsunami in Sullorsuaq (or Vaigat) Strait.

[4] The Greenland Provincial Council voted to close the mine in 1966 due to falling profits and demand, the poor quality of the coal, and the need for a larger labour force in the cod fishing industry.

Kuupik Kleist, later Prime Minister of Greenland, was born in Qullissat in 1958 and was the last person to be confirmed there before the settlement was abandoned in 1972.

[3] On 21 November 2000 a large landslide at Paatuut, 20 kilometres (11 nmi; 12 mi) away across Sullorsuaq (or Vaigat) Strait on the Nuussuaq Peninsula, generated a tsunami which hit the former site of Qullissat.

The Greenlandic rock band Sumé made the mining town's demise the topic of a song called "Qullissat" on their 1974 album Inuit Nunaat.