Question: Which mine was in production longer, Beaulieu Mine or Ptarmigan and Tom Mine? 

Context articles: Beaulieu (company)
Keeley-Frontier Mine
Kayelekera mine
Beaulieu Mine
Ptarmigan and Tom Mine
MAT/5 mine
Franklin-Creighton Mine
Bingham Canyon Mine
Husab Mine
Ferris-Haggarty Mine Site

Maison Brandt Frères, Charenton-le-Pont (House of Brandt Bros) (Beaulieu Cinema, Beaulieu - Images) is a French manufacturer of motion picture cameras especially well known for its Super 8 and 16mm hand-held cameras, founded by Marcel Beaulieu.
 Marcel Beaulieu had earlier been associated with GIC cameras introduced in 1950.
 The company's first cameras were introduced in the early 1950s.
 Later they produced their first Super 8 model the 2008 S Beaulieu, introduced in 1965.
 Though they no longer actively produce new cameras, the company still services and repairs existing Beaulieu cameras.
Keeley-Frontier Mine is a large abandoned mine in the ghost town of Silver Centre, Northeastern Ontario, Canada.
 It consists of two underground mines that were sunk 1455 ft below the surface.
 Keeley Mine was discovered in 1907 while Frontier Mine was constructed in 1921.
 The 8th level of the Keeley Mine connected with the 6th level of the Frontier Mine in 1962, creating the two compartment Keeley-Frontier Mine.
 In 1965, Keeley-Frontier Mine closed with a total production of 19000000 oz of silver, 3300000 lb of cobalt, 27000 lb of nickel and 10000 lb of copper.
Kayelekera uranium mine is an open cast uranium mine 52 kilometers west of the regional administrative and commercial centre Karonga in Malawi, Africa and is the country's largest mine.
 Kayelekera is owned 100% by Paladin (Africa) Limited (PAL), an 85% subsidiary of Australian and Canadian listed Paladin Energy and in July 2009, Paladin issued 15% of the equity in Paladin (Africa) Ltd to the Government of Malawi under the terms of the Mining Development Agreement signed between PAL and the Government in February 2007.
 The mine was officially opened on 17 April 2009 by the then Malawian president Bingu wa Mutharika.
 As of 2014, the mine is in care and maintenance mode owing to a depressed uranium market.
 While in production, the mine exported containers of uranium oxide via the port of Walvis Bay.
 The mine has not been profitable for its operators and has met opposition from organisations and individuals concerned about the mine's tax concessions, operation, adherence to law and regulation and its potential impacts on human and environmental safety.
The Beaulieu Mine was a post-World War II gold mining operation near Yellowknife, Northwest Territories.
 It entered production in October 1947, but by the end of November only 7 troy ounces (220 g) of rough gold were recovered.
 Additional gold was recovered during 1948, but altogether the mine recovered only 30 troy ounces (930 g) of fine gold.
 The operation folded in chaos and bankruptcy.
The Ptarmigan and Tom Mine were gold producers located in the Northwest Territories, Canada at Yellowknife.
 The property was staked by prospectors in 1936 and acquired by Cominco in 1938.
 The mine first produced between 1941 and 1942 but closed due to wartime restrictions.
 The old property was demolished in 1969–1970.
 A new company, Treminco Resources Limited, reopened the workings in 1985 and production from the Tom ( ) portal began in 1986 with material being trucked to Giant Mine.
 The old Ptarmigan ( ) mine shaft was dewatered and production began in 1987.
 A new mill was built at the property and was operational in July 1989.
 Low gold prices forced the company to close the mines in 1997.
 Total gold production has been approximately 120,000 troy ounces (3700 kg).
The MAT/5 is an Italian circular, plastic-cased minimum metal blast resistant anti-tank blast mine.
 It uses a pneumatic fuze which is resistant to shock and blast, and is also claimed to be resistant to mine flails and mine rollers.
 The mine's plastic case is waterproof, and it can be laid in shallow water.
 Additionally the mine will function upside down.
 The mine can be fitted with anti-handling devices.
 The mine is no longer in production.
The Franklin-Creighton Mine was a Georgia Gold Rush gold mine located off what is now Yellow Creek Road in the town of Ball Ground in Cherokee County, Georgia.
 The mine, located along the Etowah River, was initially known as the Franklin Mine because it was started by a widow, Mrs. Mary G. Franklin, who obtained a 40 acre lot in the Gold Lottery of 1832.
 Around 1883, the mine became known as the Creighton Mine or the Franklin-Creighton Mine.
 This mine was one of the most productive and continued to operate many years after other area mines had ceased operations.
 Some estimate that it was yielding $1000 per day in 1893 and others place its total production after 1880 at as much as $1,000,000.
 The mine was shut down in 1913 as a result of a collapsed shaft which caused the mine to flood.
The Bingham Canyon Mine, more commonly known as Kennecott Copper Mine among locals, is an open-pit mining operation extracting a large porphyry copper deposit southwest of Salt Lake City, Utah, in the Oquirrh Mountains.
 The mine is the largest man-made excavation in the world and is considered to have produced more copper than any other mine in history – more than 19 million tonnes.
 The mine is owned by Rio Tinto Group, a British-Australian multinational corporation.
 The copper operations at Bingham Canyon Mine are managed through Kennecott Utah Copper Corporation which operates the mine, a concentrator plant, a smelter, and a refinery.
 The mine has been in production since 1906, and has resulted in the creation of a pit over 0.6 mi deep, 2.5 mi wide, and covering 1,900 acre .
 It was designated a National Historic Landmark in 1966 under the name Bingham Canyon Open Pit Copper Mine.
 The mine experienced a massive landslide in April 2013 and a smaller slide in September 2013.
The Husab Mine, also known as the Husab Uranium Project, is a uranium mine under development near the town of Swakopmund in the Erongo region of western-central Namibia.
 The mine is located approximately 60 km from Walvis Bay.
 The Husab Mine is expected to be the second largest uranium mine in the world after the McArthur River uranium mine in northern Saskatchewan, Canada and the largest open-pit mine on the African continent.
 The Husab Mine is to start production in early December 2015 after completion of the sulfuric acid leaching plant.
The Ferris-Haggerty Mine Site was one of the richest components of the Grand Encampment Mining District in Carbon County, Wyoming.
 The site was first exploited by Ed Haggerty, a prospector from Whitehaven, England, in 1897 when he established the Rudefeha Mine on a rich deposit of copper ore.
 Haggerty was backed by George Ferris and other investors, of whom all but Ferris dropped out.
 The partners sold an interest to Willis George Emerson, who raised investment funding for improvements to the mine.
 These facilities included a 16 mi aerial tramway from Grand Encampment over the Continental Divide to the in Encampment.
 The mine's assets were eventually acquired by the North American Copper Company for $1 million.
 By 1904 the mine had produced $1.4 million in copper ore, and was sold to the Penn-Wyoming Copper Company.
 However, even with copper prices peaking in 1907, the company had difficulty making a profit from the remote mine site.
 The company was over-capitalized and under-insured and was suffered devastating fires at the mine site in March 1906 and May 1907 which halted production.
 Business disputes and a fall in copper prices prevented re-opening of the mine even after it was rebuilt.
 Machinery was salvaged after a foreclosure in 1913.
 A total of $2 million in copper ore was extracted from the mine during its life.