- Jan 20, 2001
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must be the hidden . . . tree trimming provision
WASHINGTON (Reuters) -- Shoddy tree-trimming around major power lines by Ohio utility FirstEnergy Corp. led to the failure of three key transmission lines and was the root cause of August's massive power outage, U.S. and Canadian blackout investigators said on Wednesday.
Industry experts say this is not the first time that trees have caused problems, pointing to widespread West Coast outages in August 1996 triggered by one offending tree that took out the entire grid.