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State whether the following is true or false.
A fault that first becomes visible during firing must have been caused by the firing.

  • A.True only at large scales
  • B.False only at small scales
  • C.True
  • D.False

Answer: D

Correct answer: False

Firing reveals faults far more often than it causes them. Laminations from the auger, voids from trapped air and stresses locked in during forming or drying all remain invisible until the shrinkage of firing opens them - so the investigation should begin at the forming stage, not at the kiln.

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