The 40-something worker was belted in when the mishap occurred at the facility off Doremus Avenue around 1:30 p.m. July 27, the chief said.
He suffered trauma and a cut on his left leg, Ackermann said.
Paramedics from The Valley Hospital in Ridgewood treated the injured worker at the scene before EMTs with the Glen Rock Volunteer Ambulance Corps took him to the hospital, the chief said.
Glen Rock Firefighters assisted, he said.
The New Jersey Department of Health's Division of Public Employees Occupational Safety and Health is doing a follow-up investigation, Ackermann said.
Boyd A. Loving took the photos.
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