The Claimant: The named Claimant is Pac Rim Cayman LLC (also called “Pac Rim Cayman” or “PRC”), a legal person organized under the laws of Nevada, USA, with its principal office at 3545 Airway Drive, Suite 105, Reno, NV 89511, USA. The Claimant is owned by Pacific Rim Mining Corporation (also called “Pacific Rim”), a legal person organized under the laws of Canada. In these arbitration proceedings, the Claimant advances several claims against the Respondent both on its own behalf and on behalf of its subsidiary companies, collectively described as the “Enterprises.”