Question: The company that owns Mount Keith Mine was founded in what year?

Context paragraphs:
Thompson Creek Metals: Thompson Creek Metals Company Inc. is a full cycle mining company with acquisition, exploration, development, and operation in North America. </small> The corporate office is located in Denver, Colorado.  The company primarily produces copper, gold, and molybdenum. </small> In the past several years, the Company has evolved from being a major primary molybdenum producer to becoming a copper and gold mining company with the construction and development of the Mount Milligan (open-pit copper-gold) mine and concentrator in British Columbia, Canada.  Mount Milligan is Thompson Creek Metals principal operation and the company owns 100% of this property. </small> The company also owns 100% of its Thompson Creek Mine (open-pit molybdenum and concentrator) in Idaho.  Thompson Creek Metals owns 75% joint venture interest in two other properties, including its Endako Mine (open-pit molybdenum, concentrator and roaster) in British Columbia, and its Langeloth Metallurgical Facility (roaster) in Pennsylvania. </small> Thompson Creek Metals has additional development projects, including the Berg property in British Columbia (exploration of copper, molybdenum, and silver). </small> </small>

Mount Keith (Antarctica): Mount Keith ( ) is a mountain, (1,530 m), surmounting the east end of the ridge between Rastorguev Glacier and Crawford Glacier in the Bowers Mountains, a major mountain range situated in Victoria Land, Antarctica.  The topographical feature was first mapped by the United States Geological Survey (USGS) from surveys and U.S. Navy air photos, 1960–65.  Named by Advisory Committee on Antarctic Names (US-ACAN) for John D. Keith, builder, U.S. Navy, a member of the South Pole Station party, 1965.  The mountain lies situated on the Pennell Coast, a portion of Antarctica lying between Cape Williams and Cape Adare.

Mount Cantello: Mount Cantello ( ) is a mountain, 1,820 m high, on the north side of Crawford Glacier, 4 nmi northwest of Mount Keith, in the Bowers Mountains, a major mountain range situated within Victoria Land, Antarctica.  The topographical feature was first mapped by the United States Geological Survey from surveys and from U.S. Navy air photos, 1960–65, and named by the Advisory Committee on Antarctic Names for Dominic Cantello, Jr., U.S. Navy, electrician with the South Pole Station party, 1965.  The mountain lies situated on the Pennell Coast, a portion of Antarctica lying between Cape Williams and Cape Adare.

Mount Keith Mine: Mount Keith Mine is an open pit nickel mine in Western Australia.  It is operated by BHP.  The site's closest landmark is the town of Wiluna, 85 km to the north.

Mount Keith: Mount Keith is a mountain on the crest of California's Sierra Nevada, between Mount Bradley to the north, and Junction Peak to the southwest.  Its north and west facing slopes feed the Kings River watershed by way of Bubbs Creek, and its east and south slopes feed the Owens River via Shepherd Creek.  By the same dividing line, Keith stands on the boundary of Kings Canyon National Park to the northwest, and the John Muir Wilderness to the southeast.  It is a thirteener, a mountain which has a height over 13000 feet.

Mount Keith Airport: Mount Keith Airport (IATA: WME, ICAO: YMNE) is located at Mount Keith Mine, Western Australia and is operated by BHP Billiton.

Cannington Mine: The Cannington Silver and Lead Mine is an Australian underground mine located in north-west Queensland, in the Shire of McKinlay, about 200 km southeast of Mount Isa.  The deposit was discovered by Broken Hill Proprietary Company (BHP) in 1990.  Although sitework and underground mining began in 1997, full production was not achieved until early 1999, with 1.5 million tons of ore processed in 1999.  Production since has reached 3 million tons of ore per year.  s of 2010 it was the largest and lowest cost silver and lead mine in the world.  The expected life of the Cannington mine is 25 years.  On August 19, 2014, the mine's owner BHP Billiton announced it was splitting the company in two.  A newly formed entity called South32 is to house BHP Billiton's non-core businesses including the Cannington Mine.  South32 is listed on the Australian Securities Exchange (under the code S32), with a secondary listing in Johannesburg.

Mount Keith Station: Mount Keith Station is a pastoral lease in Western Australia.

BHP: BHP, the trading entity of BHP Billiton Limited and BHP Billiton plc and formerly known as BHP Billiton, is an Anglo-Australian multinational mining, metals and petroleum dual-listed public company headquartered in Melbourne, Victoria, Australia.  Founded in 1885 in the isolated mining town of Broken Hill, it was the world's largest mining company measured by 2015 market values and Australia's fourth-largest company (by revenue), formerly the largest.

Yeelirrie Station: Yeelirrie is an East Murchison pastoral lease or sheep station on State Crown land, located approximately 80 km south west of Wiluna, in the Mid West region of Western Australia.  The nearest population centre to Yeelirrie homestead is Mount Keith Mine village, 45 km to the east.  The regional centre is Meekatharra, located 180 km to the west.

Supporting paragraphs: Mount Keith Mine BHP
Answer: 1885