Seattle Tunnel Partners v Great Lakes Reinsurance (UK) PLC et al. Seattle Tunnel Partners and Hitachi Zosen U.S.A., Ltd. appeal an order granting spoliation sanctions against Seattle Tunnel Partners for its failure to preserve pieces of a metal pipe that it claims caused the breakdown of a tunnel boring machine it had insured with the defendants. COA #798901. King County Superior Court #15-2-15009-0 SEA.