Trinity Coal Corp. creditors with about $104.3 million in claims filed an involuntary chapter 11 petition for the Essar Group unit, Bloomberg News reported yesterday. Units of Credit Agricole SA, ING Groep NV and Natixis filed the petition yesterday and also filed an involuntary petition against Trinity affiliate Frasure Creek Mining LLC. Essar Group, the Indian business group controlled by billionaire brothers Shashikant and Ravikant Ruia, acquired Trinity Coal in 2010 for $600 million. Essar Group officials did not comment on the involuntary filing. The case is In re Trinity Coal Corp., 13-50364, U.S. Bankruptcy Court, Eastern District of Kentucky (Lexington).