The company has reported it employed 231 people at the plant.
The Umatilla County Sheriff's Office confirmed the cause of the fire appeared to be a portable natural gas-powered boiler that exploded.
Nictakis stated the company is “exploring opportunities to relocate team members interested in working in our other plants” and has “provided a severance and benefits continuation package to recognize the effort and tenure that has gone into making the site successful over the past years.”