Iron, kurogane, [1] was a precious material most commonly mined by the Crab Clan, [2] a crucial commodity because of its key role in the manufacture of steel weapons and armor. [3] Numerous iron deposits were found in the Great Wall of the North. [4] The secret of forging this metal was brought by the Kami. [5]


  1. Book of Air, p. 139
  2. Iron Mine (Lotus Edition)
  3. Emerald Empire; Fourth Edition, p. 136
  4. Book of Earth, p. 129
  5. Book of Earth, p. 21

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