Aboitiz Power Corp.; Apex Mining Company Inc.; Energy Development Corp.; Bonifacio Gas Corp.; Itogon Suyoc Resources, Inc.; Monte Oro Resources & Energy, Inc.;  Palm Concepcion Power Corp.; Petron Corp.; Pilipinas Shell Petroleum Corp;  Philippine Associated Smelting and Refining Corp. (PASAR); Phoenix Petroleum Philippines, Inc.; Pitkin Petroleum, Inc.; SMC Global Power Holdings Corp.; YNN Holdings, Inc.