A fire-mine was a mine found in Lyra's world. The Tartars wanted to move to the North for the coal-spirit and the fire-mines.[1] You could fill up a balloon by finding a gas vent near a fire-mine. The bearsmiths of Svalbard would work near the fire-mines.[2]



  1. Northern Lights, Chapter 6
  2. Northern Lights, Chapter 13
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