(PORT HURON) -- Port Huron firefighters were sent to Dunn Paper in the 200 block of Riverview Street early Wednesday morning for a structure fire. Officials say the fire started in one of the company's pieces of production equipment and extended to the roof around 5 a.m. The fire was under control within an hour and production resumed a short time later. One employee was transported to a local hospital for minor injuries. Authorities say the fire started during the paper production process. The Fort Gratiot Fire Department and Tri-Hospital EMS assisted at the scene.