Alden Robbins, one of the co-owners of Robbins Lumber, where a May fire and explosion injured a dozen people and rattled the Midcoast community of Searsmont, died Thursday of his injuries, the family announced.

Almost two months ago, a fire and subsequent explosion in a silo at the lumber mill injured more than 10 people and killed two others, 27-year-old Andrew Cross, of Morrill, who died at the scene in May, and 76-year-old Assistant Searsmont Fire Chief Wayne Woodbury, who died of his injuries in June.

The incident drew a massive response from local departments, including more than 100 first responders. Investigators later determined that the fire was an accident, and that an explosion near the base of the silo lifted the structure, engulfing the area in flames.

Robbins, the vice president of sales for the company, was injured along with two other members of the family: his daughter Lily, an EMS volunteer, and Jim Robbins, the company president. All three had been hospitalized at Massachusetts General.

“Throughout his battle, he fought with extraordinary courage and determination, holding on so that his family could have precious time with him,” the family said in a statement. “He passed away peacefully, surrounded by those who loved him.”

They thanked medical teams at Maine Medical Center in Portland and the burn center at Mass General, and said they cared not only for Alden Robbins, but also for the whole family.

Gov. Janet Mills said Friday evening that she was mourning the loss of the leader in Maine’s lumber industry and steward of a historic business.

“My heart is with his family, including his father and former company president James Robbins, Alden’s wife, Amy, and their six children — among them daughter Lily, who continues to battle injuries she sustained during the same fire,” Mills said.

The announcement of Robbins’ death came hours after another person injured in the explosion, Belmont firefighter Katie Paige, was released from Maine Med. Paige had four fingers amputated and skin grafts on her hands during her treatment, and walked out of the hospital Friday afternoon to return to a hero’s welcome in Belmont.

At least one other firefighter injured responding to the incident, chief of Searsmont Rescue Sarah Tompkins, remains hospitalized.

The Robbins family said a celebration of life would be held at a later date and said details will be shared once arrangements are made. In the meantime, they asked for privacy.