The U.S. Court of Appeals for the Third Circuit on Tuesday said that insurers of bankrupt mining company W.R. Grace & Co. could be on the hook for asbestos exposure claims, leaving the issue to a bankruptcy judge to decide.

The precedential ruling from a three-member panel of the appeals court revived claims from workers suffering from asbestos-related illnesses, after U.S. Bankruptcy Judge Kevin Gross of the District of Delaware held they were barred by an injunction that channels claims against third parties to a trust.