Question: The Victor Diamond Mine is owned by the international corporation that operates in how many countries?

full_context: Document 1: Lac de Gras: Lac de Gras is a lake approximately 300 km north east of Yellowknife, in the Northwest Territories of Canada. Lac de Gras was the centre of the diamond rush of the 1990s. There are three working diamond mines in the area, Diavik Diamond Mine, Ekati Diamond Mine, and Snap Lake Diamond Mine. It was called Ekati by aboriginal peoples.
Document 2: Jericho Diamond Mine: The Jericho Diamond Mine is a dormant diamond mine located in Canada's Nunavut territory. Jericho is Nunavut’s first and only diamond mine. It is located 420 km northeast of Yellowknife, Northwest Territories and is accessible by air all year and by winter road from Yellowknife. The project was mined from 2006 to 2008, and produced 780000 carat of diamonds from 1200000 t of kimberlite mined from the open pit operation. Over $200 million was invested in the development of the Jericho operations including the construction of a 2000 t per day diamond recovery plant, maintenance facility, fuel farm, and offices and accommodation for 225 personnel.
Document 3: Kanichee Mine: The Kanichee Mine, also less commonly known as the Ajax Mine, is an abandoned base metal and precious metal mine, located in the Temagami region of northeastern Ontario, Canada. It is near the small unincorporated community of Temagami North, accessed by the Kanichee Mine Road from Highway 11. The Kanichee Mine zone has been explored and mined discontinuously from as early as 1910. During the 20th century, it operated and closed down at least three times, with the most recent being from 1973 to 1976. To date, the discontinuous operation of Kanichee Mine has produced 4.2 million pounds of metal.
Document 4: Victor Mine Aerodrome: Victor Mine Aerodrome (TC LID: CVM2) is a registered aerodrome located 0.5 NM north of the Victor Diamond Mine in northeastern part of the Kenora District which, in turn, is located in northwestern Ontario, Canada.
Document 5: Williamson diamond mine: The Williamson Diamond Mine (also known as the Mwadui mine) is a diamond mine 23 km northeast of Shinyanga in Tanzania; it became well known as the first significant diamond mine outside of South Africa. The mine was established in 1940 by Dr. John Williamson, a Canadian geologist, and has been continuous operation since then, making it one of the oldest continuously operating diamond mines in the world. Over its lifetime it has produced over 19 million carats (3,800 kg) of diamonds. The Williamson mine, once owned by its namesake Dr. Williamson and later nationalized by the government of Tanzania. Since February 2009 the mine is mostly owned by Petra Diamonds, with 75% ownership, the government of Tanzania owning the remaining 25%.
Document 6: Catoca diamond mine: The Catoca diamond mine is the fourth largest diamond mine in the world, and is located in Angola. The mine is owned by a consortium of international mining interests, including Endiama (the state mining company of Angola) (32.8% ownership), Alrosa of Russia (32.8%), Odebrecht of Brazil (16.4%), and the Diamond Finance CY BV Group (16.8%). The mine is located on a kimberlite pipe.
Document 7: Dvoinoye Gold Mine: The Dvoinoye Gold Mine is an underground gold mine in the Bilibinsky District of the Chukotka Autonomous Okrug of Russia. The mine is owned by Canadian mining company Kinross Gold and is approximately 100 km from their Kupol Gold Mine. Originally the site of a surface mine, Kinross acquired the property in 2010, and built the underground mine at a cost of US$360-million. The mine began production in 2013.
Document 8: Gahcho Kue Diamond Mine Project: The Gahcho Kué Diamond Mine is located on the Canadian tundra in the Northwest Territories. It is situated at Kennady Lake ( ), in the Akaitcho Treaty 8 Territory AK claim block, which is 85 km southeast of the Snap Lake Diamond Mine and approximately 280 km east northeast of Yellowknife. The site is served by Gahcho Kue Aerodrome, which has both an ice runway in winter and a year-round gravel runway, and a spur of the Tibbitt to Contwoyto Winter Road from Lupin Mine. the main camp is at , north of the ice strip, with a smaller site at , south of the runway.
Document 9: Premier Mine: The Premier Mine is an underground diamond mine owned by Petra Diamonds. It is situated in the town of Cullinan, 40 km east of Pretoria, Gauteng Province, South Africa. Established in 1902, it was renamed the Cullinan Diamond Mine in November 2003 in celebration of its centenary. The mine rose to prominence in 1905, when the Cullinan Diamond — the largest rough diamond of gem quality ever found — was discovered there. The mine has produced over 750 stones that are greater than 100 carat and more than a quarter of all the world's diamonds that are greater than 400 carat . It is also the only significant source of blue diamonds in the world.
Document 10: Victor Diamond Mine: The Victor Diamond Mine is the first Canadian diamond mine located in Ontario, and De Beers' second diamond mine in Canada (after the Snap Lake Diamond Mine). It is located in the Northern Ontario Ring of Fire, in the James Bay Lowlands 90 km west of Attawapiskat in the remote northern part of the province. In June 2005, the Attawapiskat First Nation voted in favour (85.5%) of ratifying the Impact Benefit Agreement (IBA). Construction of the mine began in February 2006 which created 3200 positions; mining and operations will create around 400 permanent positions. The Victor Mine is an open-pit mine, with a processing plant, workshops, and an airstrip located on site. By 2013-2014 royalties collected from De Beers Victor Diamond Mine amounted to $226. At that time De Beers was continuing to pay off its "$1 billion investment to build the mine and from now until it closes, the company expects to pay tens of millions of dollars in royalties."
Document 11: Diamond Management &amp; Technology Consultants: Diamond Management & Technology Consultants (casually referred to as Diamond) was an independent management consulting firm founded in 1994, headquartered in Chicago, IL with satellite offices in Hartford, CT, New York City, Washington DC, London, and Mumbai. It was acquired by the British firm, PwC in 2010. Diamond was a smaller player among companies such as Mercer Management Consulting, Deloitte Consulting, and Accenture. The industry segments under which Diamond operated include consumer packaged goods, financial services, and health-care, among numerous others.
Document 12: De Beers: The De Beers Group of Companies is an international corporation that specialises in diamond exploration, diamond mining, diamond retail, diamond trading and industrial diamond manufacturing sectors. The company is currently active in open-pit, large-scale alluvial, coastal and deep sea mining. It operates in 28 countries and mining takes place in Botswana, Namibia, South Africa and Canada. Until the start of the 21st century, De Beers effectively had total control over the diamond market as both a monopoly and monopsony of diamonds. Opposition has since dismantled the complete monopoly, though De Beers is still a large shareholder and currently sells approximately 35% of the world's rough diamond production through its Global Sightholder Sales and Auction Sales businesses.
Document 13: Anglo American plc: Anglo American plc is a multinational mining company based in Johannesburg, South Africa and London, United Kingdom. It is the world's largest producer of platinum, with around 40% of world output, as well as being a major producer of diamonds, copper, nickel, iron ore and metallurgical and thermal coal. The company has operations in Africa, Asia, Australasia, Europe, North America and South America.
Document 14: Murowa diamond mine: The Murowa diamond mine is a diamond mine located in Mazvihwa, south central Zimbabwe, about 40 kilometres from the asbestos mining town of Zvishavane in the Midlands province. The mine is majority owned and operated by the Rio Tinto Group, which also owns the Argyle diamond mine in Australia and part of the Diavik Diamond Mine in Canada. The mine is a combination of open pit and underground construction; current estimates put construction costs at $61 million USD and mine reserves are 19 million tonnes of ore, with an ore grade of 0.9 carat per tonne.
Document 15: Signet Jewelers: Signet Jewelers Ltd. (Ratner Group 1949-1993 then Signet Group plc to September 2008) is the world's largest retailer of diamond jewelry. The company is domiciled in Bermuda and headquartered in Akron, Ohio, and is listed on the New York Stock Exchange. As of 14th march 2016 the company has been delisted from the London Stock Exchange, following reports that less than 1% of their annual trading volume was conducted via the platform. The group operates in the middle market jewelry segment and has number one positions in the U.S., Canada and UK speciality jewelry markets. Certain brands (Jared in the U.S. and H. Samuel/Ernest Jones/Leslie Davis in the UK) operate in the upper middle market. Signet Jewelers owns and operates the companies Zales, Kay Jewelers, and Jared.
ground_truth: 28