Hi All,
I have been reading an archaeological report discussing the vitrification of
the interior of the ramparts of some IA hill forts. At one point some coal
miners are quoted as saying the effects are similar to the effects of
spontanious combustion in coal waste tips.
I must admit, I have always thought these fires were caused by people
scavenging the tips for coal, what evidence is there for spontanious
combustion?
George
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