(CNN) — No one has been found alive in the search following a massive explosion at a military and explosives plant in central Tennessee, Chris Davis, sheriff of Humphreys County, said Saturday.

“We’re moving to recovery,” Davis said with emotion during a news conference one day after the blast, his voice trailing off at times. “At this time, we have recovered no survivors.”

“As we get into this, we find it even more devastating than what we thought initially,” he added.

Early Friday, the thundering blast at Accurate Energetic Systems reverberated across a tight-knit community, razing an entire building on the plant’s sprawling campus. At least 18 people were missing after the massive explosion, which rattled homes miles away and rocketed debris for at least half a square mile.

The

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