Production lines at Timber Products' Medford particle board plant are silent following a two-alarm fire Tuesday night.

Timber Products Vice President David Smith, who was in Medford Wednesday to inspect the damage, wasn't sure when the plant's 96 employees would return to action.

"It's too early to tell right now when we'll reopen," Smith said. "We're still evaluating the facility."

The company's plywood and veneer mills, adjacent to the particle board facility at the northeast corner of Sage and West McAndrews roads, remained in operation.

The Springfield-based wood products firm said Wednesday it is working with firefighters to clean up the facility, first opened in 1966, after fire broke out in its raw materials building around 6:15 p.m. Tuesday.

"Plant employees took quick action and alerted the fire department, preventing any injuries," Timber Products said in a news release. "There was no serious damage to equipment, so the company doesn’t anticipate a prolonged downtime for the mill. It is critical to ensure there are no lingering issues and the facility is safe for employees."

The company said employees can contact shift supervisors for more information about their individual shifts.

Medford Fire-Rescue said the fire appears to have spread into different portions of the building by way of an upper conveyor belt system. The origin and cause of the fire are still under investigation. Fire crews knocked down most of the fire within an hour, but spent much of the night working on smaller fires in hard-to-reach areas. Jackson County Fire District 3 supplied two engines and a battalion chief to the efforts.

— Reach reporter Greg Stiles at 541-776-4463 or business@mailtribune.com. Follow him on Twitter at www.twitter.com/GregMTBusiness, and on Facebook at www.facebook.com/greg.stiles.31.