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The setting of fires; arson. / (mining, historical) The use of fire to soften or crack the working face of a lode, to facilitate excavation; later superseded by the use of explosives.

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firesetting

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firesetting

noun

The setting of fires; arson. / (mining, historical) The use of fire to soften or crack the working face of a lode, to facilitate excavation; later superseded by the use of explosives.