Creditors of media entrepreneur Robert F.X. Sillerman want to force the onetime billionaire into bankruptcy.
The bankrupt company's retirement plan has a huge shortfall, says the Pension Benefit Guaranty Corp.
The move comes as the company scrambles for cash and works to extract itself from two U.S. power plant projects.
The funds stash of unsecured stock would stand to gain great value from an unexpected coal resurgence.