Sumitomo Metal Mining Co. Ltd. (SMM) carried out a bankable feasibility study on the Coral Bay Nickel Project (CBNC) in 2000. The aim of the study was to determine the potential for using Rio Tuba Nickel Co.'s (RTN) stockpiled ore from its Palawan Island mine in the Philippines in a high pressure acid leach (HPAL) plant. After acquiring all necessary approvals the CBNC plant was commissioned in 2005 and reached its nameplate capacity of 11 kt/a Ni and 750 t/a Co, only two years later in 2007. An astounding feat compared with HPAL operations built in the same era. By 2006 SMM was planning to expand CBNC and double the existing plant's capacity to 22 kt/a Ni. The construction of the second line was completed in 2009 with the operation exceeding expectations and producing 24 kt/a Ni by 2014.