 The mined coal was supplied exclusively to the adjacent coal-fired Centralia Power Plant, which is operated by TransAlta Centralia Generation LLC and the coal mine was operated by TransAlta Centralia Mining.Prior to May 2000, the mine was owned and operated by PacifiCorp.The Centralia Mine completed its 31st year of production in 2001, producing of sub-bituminous coal, 354,481 short tons more than it produced in 2000.