GREEN BAY, Wis. (WTAQ) - Green Bay Fire Department crews spent most of Tuesday night and part of this morning controlling a duct fire at the Georgia-Pacific mill on Day St. Lt. Nick Craig says the fist call came in shortly before 10:30 p.m. After clearing the scene by about 3:30 a.m. Wednesday, crews were called again by 6 a.m. when the smoke came back. Things were finally brought under control. Nobody hurt and they're still tallying up the damages and how the fire started.