The NTSB just released a synopsis of their findings concerning a derailment on CN at Tamora, IL. They cite improperly applied cadwelded signal bond wires as causing rail fracture which led to the derailment. There will probably be more details when the final report is released.
Here is a link to the NTSB synopsis:
http://www.ntsb.gov/publictn/2005/RAR0501.htm
Here is a link to the NTSB synopsis:
http://www.ntsb.gov/publictn/2005/RAR0501.htm