Found this for you:
http://www.dallasnews.com/sharedcontent/dws/dn/latestnews/stories/101505dn.f7f9deab.html
Thousands told to flee tank explosion in Texarkana
10:08 AM CDT on Saturday, October 15, 2005
TEXARKANA, Ark. — Hundreds of homes were evacuated Saturday after a liquid propane gas tank was hit by a Union Pacific train car, exploding in a ball of fire and leaving a plume of smoke over the south end of the city, a police spokesman said.
Officers went door to door and urged thousands of people to move to the north side of town while firefighters put out the blaze.
The air quality was of most concern because a train car carrying vinyl acetate caught fire, police spokesman Chris Rankin said.
Rankin said fumes from the chemical are “most definitely poisonous.”
The evacuation was suspended about four hours after the 5 a.m. crash, when police were told the fire was under control. Police on the scene said several “structures” were destroyed by fire, Rankin said.
Area hospitals reported seven people were treated for respiratory problems or possible exposure to fumes.
Wadley Regional Medical Center was in the evacuation area, and several patients and nurses also complained of nose and eye irritation, spokeswoman Shelby Brown said.
Union Pacific spokesman Mark Davis, heading to the scene from Omaha, Neb., said the freight train coming from Chicago hit the back of another train in the rail yard, causing two empty hopper cars to derail. He said one of the cars hit “a small LPG tank” similar to what farmers use for fuel. Union Pacific did not know what caused the accident, he said.
The train was headed for Laredo, Texas, when it hit the back of the other Union Pacific freight train, which was coming from Pine Bluff and headed for Harlingen, Texas, Davis said.
Rankin said the switching yard is behind the police station, about a quarter mile from the Texas border and also serves Kansas City Southern and Amtrak.
Hmm.. my post to you isn't showing up..