(CNN) — Investigators using technology that lets them analyze DNA quickly without a lab have positively identified the remains of 14 of the 16 people killed in a massive blast at a Tennessee explosives plant Friday, according to the Humphreys County Sheriff’s Office.

Officials say there were no survivors inside the facility, depriving investigators of crucial eyewitness accounts of the final moments leading up to the explosion.

While investigators have compiled a list of employees presumed to be dead, the certainty of DNA testing may provide comfort for the victims’ loved ones, Humphreys County Sheriff Chris Davis said in a press conference Wednesday.

“This is that one little piece of light that’s made it through it in efforts to give [families] the hope of having closure,” Davis said.

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