Walker v. Forest Preserve District of Cook County

where the cost of restoring strip-mined land was more than quadruple its potential value in the restored condition | cost of restoration of strip-mined land more than quadruple the value of the restored land | where the cost of restoring strip-mined land was more than quadruple its potential value in the restored condition | there is a presumption of prejudice where an insurer defends unconditionally without a reservation of rights