SEARSMONT, Maine — Hundreds of firefighters, first responders and community members lined the streets of Searsmont, Maine, to honor Searsmont firefighter who died following injuries sustained in the Robbins Lumber explosion on May 15.

Assistant Chief Wayne Woodbury, 76, of the Searsmont Fire Department, died Sunday morning, June 14, from injuries suffered in the May 15 explosion at Robbins Lumber. He had been receiving treatment at Maine Medical Center in Portland.

The explosion also killed firefighter Andrew Cross and injured 12 others, one of whom was Woodbury. Several victims remained hospitalized in Maine and Massachusetts as recovery efforts continued. Officials have said the cause of the fire is believed to be accidental, though the investigation remains ongoing.

The Maine State Fire Marshal's Office said the May 15 fire and explosion was considered accidental. Investigators believe the fire originated in the area of the unloader mechanism at the base of the silo. Before fire suppression operations could fully contain the smoldering fire, a rapid ignition of suspended particulate material resulted in an explosion within the silo.

Investigators determined during the explosion that the silo lifted from its concrete base, releasing large amounts of sawdust and additional particulate material. The silo then toppled over, at which point the surrounding area became rapidly engulfed in fire. The fire rapidly spread to adjacent buildings and structures within the mill complex, contributing to the extensive damage to multiple buildings.

Liberty Fire and Rescue said firefighter Jacob Spaulding was reportedly released from Maine Medical Center on Monday, June 14. One of three members of the Robbins family is on the mend almost a month after the deadly fire and explosion at Robbins Lumber. 

The lumber company resumed full mill operations and began processing orders again on May 26, less than two weeks after the explosion.