At 01:06 crews were alerted to the Salemville section of Salem Twp (90 District) for the House Fire with Entrapment. Engine 34 & Engine 90 arrived simultaneously to find a 2-story duplex with heavy fire on both sides. Crews stretched lines and began the exterior fire attack from the front, while gaining entry from the rear to begin an interior attack and search & rescue operations. Interior crews were eventually driven out by the high volume of fire that was burning rapidly across the structure. The extreme weather conditions played havoc on the operations as trucks, hoselines, ladders and tools were freezing instantly. Sadly 1 person succumbed to the fast moving fire prior to the arrival of fire crews. Units out 5 hours.