Investigators do not expect to find any survivors at the scene of a blast at a Tennessee explosives company, officials say.

The explosion, which was felt for miles, destroyed a building at the headquarters of Accurate Energetic Systems early on Friday in Bucksnort, about an hour’s drive west of Nashville.

“More than 300 people have been through almost every square inch of this facility, and at this time, we’ve recovered no survivors,” Humphreys County Sheriff Chris Davis told reporters on Saturday. “It’s a great loss to our communities.”

Officials did not offer a precise death toll but have previously said 18 people were unaccounted for. Davis confirmed the operation had shifted from rescue to recovery and that investigators would use DNA testing to confirm the identities of those who

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