Come to think of it you could back in the 80s learn alot from dust bowls crazed glass, melted alum door thresholds and spalling you would see it all in those fires but at that time you could not get anyone in the FI profession to stop for a second and listen to you about what you were seeing in accidental fires. It wasn't till years later that it came out I think about the time John went to check our the CA wild fires and was seeing all of this If I recall.