Lawyers for thousands of Ground Zero workers suing over their exposure to dust from the destroyed World Trade Center have offered to lower their legal fees in an attempt to salvage a major settlement in the case.

The law firm Worby Groner Edelman & Napoli Bern was initially poised to take home a third or more of a $657 million settlement negotiated on behalf of the workers this spring, but the future of that payout was put in doubt when U.S. District Judge Alvin Hellerstein rejected the deal in March.