25D13(IRON) · minerals and metals: iron

47C55 · sharpening, grinding (industrial processes)

47D8(GRINDSTONE) · tools, aids, implements ~ crafts and industries: grindstone

47D8(WHETSTONE) · tools, aids, implements ~ crafts and industries (WHETSTONE)

47D9 · loss, damage, destruction of machinery

58AA1(+4) · Destruction (+ emblematical representation of concept)

86(TERIT ET TERITUR) · proverbs, sayings, etc. (TERIT ET TERITUR)