Two buildings in Port Huron’s Industrial Park were damaged in two separate fires yesterday evening. According to the Port Huron Fire Department, the first fire broke out around 6pm last night at Michigan Metal Coating in the 2000 block of Dove Street. It is believed to have been caused by an issue with the building’s heating and ventilation system and investigations are ongoing. Battalion Chief Jeff Tucker says while firefighters were on the scene of that blaze, the call came in for another fire just a block away at ALD Thermal Treatment in the 2600 block of 24th Street. Tucker says that fire was believe to have started from an exhaust unit that caught a portion of the roof on fire. Only minor damage to the buildings were reported. There were no injuries to employees and one firefighter was treated for heat exhaustion. Production at ALD Thermal Treatment and Michigan Metal Coatings is expected to resume today.