Kaitangata, February 1879: Candles cause explosion in an area known for methane (firedamp) killed 34 men and boys.
Brunner, March 1896: Incorrect blasting set off a gas explosion - probably methane - killing 65 men.
Huntly, Ralph's mine, September 1914: A miner's naked light ignited firedamp, killing 43 men.
Dobson mine, December 1926: An explosion killed nine men.
Huntly, Glen Afton mine, September 1939: Carbon monoxide asphyxiated 11 men.