It is not known when the tank car involved in a propane fire will be moved by owner Union Tank Car Company for a forensic investigation, according to Lincoln Fire Chief Dave Whitt. The propane fire alongside Nicolaus Road was from Aug. 23 to Aug. 24. The forensic investigation will look at the tank and its valving system to determine what caused the fire, according to previous News Messenger reports. City Council has previously said that the investigation will help in future discussions on preventing tanker fires. The tank car, which contained 29,000 gallons of propane when it caught fire, burned for more than 36 hours, causing the evacuation of 4,800 downtown homes and businesses. For previous articles, see the tanker fire icon on lincolnnewsmessenger.com.