AngloGold Ashanti Limited is a global gold mining company.
 It was formed in 2004 by the merger of AngloGold and the Ashanti Goldfields Corporation.
Mount Lyell Mining and Railway Company was a Tasmanian mining company formed on 29 March 1893, most commonly referred to as "Mount Lyell".
 Mount Lyell was the dominant copper mining company of the West Coast from 1893 to 1994, and was based in Queenstown, Tasmania.
The Great Snaefell Mining Company was a mining company formed to operate the Great Snaefell Mine on the Isle of Man.
The Quincy Mine is an extensive set of copper mines located near Hancock, Michigan.
 The mine was owned by the Quincy Mining Company and operated between 1846 and 1945, although some activities continued through the 1970s.
 The Quincy Mine was known as "Old Reliable," as the Quincy Mine Company paid a dividend to investors every year from 1868 through 1920.
 The Quincy Mining Company Historic District is a United States National Historic Landmark District; other Quincy Mine properties nearby, including the Quincy Mining Company Stamp Mills, the Quincy Dredge Number Two, and the Quincy Smelter are also historically significant.
Anaconda Copper Mining Company (from 1899 to 1915, known as the Amalgamated Copper Mining Company) was an American mining company.
 It was one of the largest trusts of the early 20th century.
 Founded in 1881 when Marcus Daly bought a silver mine, the company expanded rapidly based on the discovery of huge copper deposits.
 Daly built a smelter to process copper mined in Butte, Montana.
 By 1910, Anaconda had expanded its operations and bought the assets of two other Montana copper companies.
 In 1922 it bought mining operations in Mexico and Chile; the latter was the largest mine in the world and yielded two-thirds of the company's profits.
 The company added aluminum reduction to its portfolio in 1955.
James MacNaughton, also variously known as "the King of Houghton County", the "Czar of the Copper Country" or simply "Big Jim" (b. March 4, 1864) was the third and last known President and General Manager of the Calumet and Hecla Mining Company during the hate-filled Copper Country Strike of 1913–1914.
 In addition to the Calumet and Hecla Mining Company, MacNaughton was also the General Manager of the Ahmeek Mining Company, Allouez Mining Company, North Kearsarge mine, South Kearsarge mine, Tamarack Mining Company, Osceola Consolidated Copper Company, St. Louis Copper Company, Laurium Mining Company, La Salle Copper Company, Isle Royale Copper Company, Superior Copper Company, and the Centennial Copper Mining Company.
 MacNaughton also held a position as the Chairman of the Houghton County Board of Supervisors and the first chairman of Miscowaubik, a private business club headquartered in Calumet, Michigan.
The Aldrich Coal Mine Museum is a historical museum located in the former company store of Montevallo, Alabama.
 Aldrich was once a coal mining town, but is now a part of Montevallo.
 The museum contains historical photographs, artifacts, and displays from Aldrich's coal mine, churches, school, prison, stores, and post office.
 The only coal miner monument in Alabama is on display outside of the museum The museum is housed in the former Montevallo Mine Company commissary, and contains the original sales counter and cash register.
 The Montevallo Coal Mine Company Store is listed on the Alabama Register of Landmarks and Heritage.
The Lehigh Coal and Navigation Company (LCAN) (1988–2010) was a modern-day anthracite coal mining company headquartered in Pottsville, Schuylkill County, Pennsylvania, U.S. which acquired many of the 'Old Company' (LC&N) properties and re-launched the Lehigh Coal Companies brand in 1988.
 The LCAN ran strip mining operations in the Panther Creek Valley east of Lansford along U.S. Route 209; with vast properties dominating the coal areas of Tamaqua, Coaldale, and Lansford.
 These properties are largely the same real estate assets as were acquired in the Panther Creek Valley by the predecessors: the haphazard Lehigh Coal Mine Company (1792-1822) and the builders of the Lehigh Canal and first American blast furnaces, the Lehigh Coal & Navigation Company (Old Company, LC&N), which spearheaded the U.S. Industrial revolution.
 The new company was incorporated in 1988 acquiring LC&N assets after bankruptcy proceedings, taking the name of the original.
The Morila Gold Mine is an open-pit gold mine situated 180 km south of Bamako, near the community of Sanso, in the Sikasso Region of Mali.
 The operation is jointly owned by AngloGold Ashanti and Randgold Resources, who each have an effective holding of 40% through jointly-owned Morila Limited, while the Government of Mali owns the remaining 20%.
The Isle of Man Mining Company also referred to as the Foxdale Mining Company was a mining company formed to operate the Foxdale Mines on the Isle of Man.

Question: What percent of the Morila Godl Mine Company does the mining company formed in 2004 by a merger own?
Answer: 40%