"does anyone remember what post or image was associated with: 4515 sb?"
Yes, it was in the letter sent by the Abu-Hafs Al-Masri brigades to Al-quds al-arabi, amongst others shortly after the 3/11 Madrid train bombings.
High-speed train crash in Turkey kills 14
7/22/2004, 1:58 p.m. ET
The Associated Press
ANKARA, Turkey (AP) — A high-speed train derailed Thursday in northwestern Turkey, killing at least 14 people and injuring 40, the private NTV television station reported.
Four of the train's cars overturned near Pamukova in Sakarya province, the report said. The cause of the accident was not known.
CNN-Turk television said the train was traveling from Istanbul to Ankara.
"We have heard that there is a serious accident," said Deputy Governor Orhan Aydinsoy who was traveling to the area. He said hospitals had been put on alert.
Oguz Dizer, a journalist who was traveling in the area, said he saw several bodies lying near the tracks.
"The scene is one of carnage," Dizer was quoted as saying. "There are people lying all over the place."
He told NTV that soldiers had arrived on the scene to help the injured.
Ditto.