Lincoln, RI – Fire Alarm started hitting the tones for Station 7, 4, 3, and Rescue 4 around 2330hrs on Friday, May 2, 2009 for a reported heater fire in the bedroom at 47 Old River Road. As the companies were calling enroute, fire alarm keyed the radio reporting that police were on scene stating that the rear of the building had heavy fire venting out of the windows. Chief 7 arrived on scene reporting a working fire in a 1sty wdfm occupied dwelling with fire going through out. Station 2 was special called to the scene for the F.A.S.T team along with Rescue 2 for EMS/Rehab. First due Engine 76 arrived and stretched in the first line for fire attack. Engine 31 established a 5” feeder line to Engine 76. Engine 4 stretched in a backup line to the rear to knock the overlapping fire on side 3. As the crew from Engine 4 and Rescue 4 made the rear deck, a 20 pound propane cylinder from the grill let go and was self venting fuel. They cooled the tank down, shut it off, and removed it to safety. Firefighters then continued to knock down the bulk of the heavy fire from the deck. The bulk of the heavy fire was knocked down in 15 minutes. The building sustained major fire damage and required extensive overhauling. Two firefighters fell through the floor in a rear bedroom because of the heavy charring. The Jakes did not receive injuries and continued to open up. Rescue 2 evaluated the occupants on scene for minor burns and smoke inhalation but they refused an ER evaluation. Lincoln Fire and Police along with the RI State Fire Marshal’s Office will be investigating cause and origin.