Equipment at the Columbia Generating Station near Richland undergoes a routine check.
Equipment at the Columbia Generating Station near Richland undergoes a routine check. Tri-City Herald file
Equipment at the Columbia Generating Station near Richland undergoes a routine check. Tri-City Herald file

Anonymous letter to Energy Northwest questions investigation findings

April 26, 2016 06:24 PM

UPDATED April 26, 2016 07:27 PM

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    This video from November shows demolition of the north wall of the canyon, allowing heavy equipment to begin removing strong backs from the walls. Strong backs are brackets from which pencil-shaped processing tanks once hung. It also shows the array of dust suppression tools, each spraying water from a different angle to help control radiological contamination during demolition.