Three construction workers in Chicago were in serious condition earlier this week after a steel beam they were working on top of collapsed.
According to a report from the Chicago Tribune, the workers had connected the beam they were standing on top of using a two-bolt connection system Monday morning. Occupational Safety and Health Administration spokesman Scott Allen told the paper that the two bolts sheared off and the beam collapsed.
All three workers survived the fall and were hospitalized in serious-to-critical condition. Allen told the paper that all the required fall protection guidelines were met by the crew as they were harnessed to the beam and had safety nets below them.
Despite the nets, one of the workers fell into a hole 10 feet deep. He was rescued using a basket lifted by a crane.
The jobsite was shut down pending an OSHA investigation.