Turning

Subject:
nothing magic about lightning

Bill Tindall, E.Tn.
Any damage to poplar will make those streaks. While called mineral stain I believe it is fungal stain. Buck a log into sections in the woods and leave the ends touching and in short order these streaks will show up at the mill. I presume there is inoculation when the log is bucked and touching keeps the surface attractive for propagation.

Pasture cattle around a poplar and it will have black streaks from root damage. A fire scar will cause it. I am not surprised that a wound from a lightening strike will too.

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