Wacker employees sheltering in place as clean up continues from last week's explosion

Note: This photo was captured during the chemical explosion on September 7, 2017

(WDEF/WVLT) -- Wacker employees were told to shelter in place, according to Bradley County officials.

EMA Director Troy Spence told WDEF the plant is manually clearing out pipes following last week's chemical explosion that sent a firefighter to the hospital.

Spence said in order to clear out the pipes safely, employees must shelter in place. He urged there is no threat to the public, according to WDEF.

The Bradley County Sheriff's Office said last week's incident was caused by a mechanical failure that triggered a plume of low-concentrated hydrochloric acid.