Most of the bankruptcy settlement funds were placed in a Successor Coeur dâAlene Custodial and Work Trust (Trust). The Trust can only be used to do cleanup work in mining contaminated areas of the Basin, outside of the Bunker Hill Box. The Trust is managed by a Trustee.ut of a global bankruptcy settlement totaling $1.7 billion for environmental cleanups at contaminated sites across the country, about $494 million will go toward Superfund cleanup in the Bunker Hill Superfund site.