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CARMEL, Ind. – A man has been rescued from an asphalt silo after being trapped for about 8 hours on Tuesday.

First responders were called to the scene in the 5100 block of East 96th Street, near Allisonville Road shortly after 12:30 p.m.

When law enforcement arrived, they found the 34-year-old contract worker trapped up to about his chest.

Officials with the Indianapolis Fire Department believe the man was measuring the interior of the silo when he stepped onto some kind of air pocket in the gravel, which sucked him down into a hole.

Seven rescuers were sent down into silo to help the worker into an 18 by 18 ft. space about 30 ft. down. Crews from Sugar Creek, Greenfield, Carmel and Fishers assisted.

“What you’re dealing with inside the gravel was basically trying to remove pieces of concrete, it’s just that heavy. It’s not workable. Every time they tried to move the concrete there was no place for it to go,” IFD spokesperson Rita Reith said.

Using a giant shop vacuum to remove some of the gravel, crews were eventually able to get the gravel down to the man’s waist, being careful of the timing of loosening the material around him. Then, they slowly released some gravel from a door at the bottom of the silo and pulled the man to safety.

“This is something that not only the victim was already in danger, but putting rescuers down in there, if anything would have gone wrong, you know the gravel just as it had sucked him in it would have sucked in the rescuers as well,” Reith said. “It’s all about timing and finessing the situation.”

The man is in fair condition with no visible injuries, according to IFD. He was transported to a local hospital to be checked out.

The man told crews he’s not doing this line of work anymore.