Question: Which was opened first, the Lupin Mine or the Hedley Mascot Mine?

full_context: Document 1: Minto City: Minto City, often called just Minto, sometimes Minto Mines or Minto Mine, was a gold mining town in the Bridge River Valley of British Columbia from 1930 to 1936, located at the confluence of that river with Gun Creek, one of its larger tributaries. It was first called the Alpha group of claims in the 1920s, when underground miners were exploring the seams of Cadwallader Creek and the origins of the placer deposits downstream in the Bridge River. The mine prospect was never much successful although a model townsite was built by promoter "Big Bill" Davidson, who imported soil to build a specially-built rodeo ground and baseball diamond on the rocky site. The larger mine of Bralorne was nearby. The mine shut down in 1936 due to productivity issues, but restarted in 1940. The valley has since been significantly altered when most of the vestiges of the town were inundated by the waters of the Carpenter Lake reservoir following completion of the Bridge River Power Project. The town sat on the western end of the lake near the present Carpenter Lake Road (a section of BC Road 40), part of the road drove through a wooden Tudor arch built into the rock mill.
Document 2: Hedley, British Columbia: Hedley is an unincorporated town in southern British Columbia, Canada, named after Robert R. Hedley, the manager of the Hall Smelter in Nelson. Hedley is located at the foot of Nickel Plate Mountain in the Similkameen. The town had a population of approximately 400 as of 2005. In the early 1900s, Hedley's population peaked over 1,000 people, primarily due to the gold mining industry. The Hedley Museum and the Mascot Mine Museum display artifacts and photographs from this era.
Document 3: Lupin Mine: Lupin Mine was a gold mine in Nunavut Territory, Canada. It opened in 1982 and was originally owned and operated by Echo Bay Mines Limited, who in 2003 became a fully owned subsidiary of Kinross Gold Corporation.
Document 4: Hedley Mascot Mine: The Hedley Mascot Mine was a gold mine in Hedley, British Columbia, Canada. Gold was first discovered in the Nickel Plate Mountain area in 1897 and several small mines were developed over the years. The Hedley Mascot Mine operated between 1936 and 1949 and was one of the most unusual mining operations in the world, being built entirely on the side of a mountain, 5,000 feet above the town of Hedley or seven thousand feet above sea level. In the 1990s, the British Columbia government was going to burn the site down because it posed a safety risk, but the Minister of Tourism at the time intervened and, in 1995, steps were taken to preserve the site as a Provincial Heritage resource.
Document 5: Ruth Mine: The Ruth Mine was a small gold producer about 65 km (40 miles) east of Yellowknife, Northwest Territories. It operated briefly during 1942 and then again in 1959, extracting only 550 troy ounces (17 kg) of gold thus far. The old mine is today (2012) significant as one of the last intact abandoned mining properties from the 1940s period in the Northwest Territories, although the site was scheduled to be remediated by the federal government.
Document 6: Meadowbank Gold Mine: The Meadowbank Gold Mine is an open pit gold mine operated by Agnico-Eagle Mines in the Kivalliq district of Nunavut, Canada.
Document 7: Kemess Mine: The Kemess Mine was an open-pit copper and gold mine, located just northeast of the foot of Thutade Lake, at the head of the Finlay River, in the Omineca Mountains of the Northern Interior of British Columbia, Canada. It was operated by Royal Oak Mines from 1998 to 1999, when it was bought by Northgate Minerals. Northgate operated the mine until its closure in 2011; that year Northgate was taken over by AuRico Gold. In 2014 AuRico Gold partitioned off its portion of kemess Mine ownership creating a new company called AuRico Metals. AuRico Metals is actively implementing permits for a block caving mine.
Document 8: Ptarmigan and Tom Mine: 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).
Document 9: Pitt Lake's lost gold mine: Pitt Lake's Lost Gold Mine is a legendary lost mine said to be near Pitt Lake, British Columbia, Canada, the supposed wealth of which has held the imagination of people worldwide for more than a century. Ever since the years of the Fraser Canyon Gold Rush prospectors and adventurers have been looking for the mine and gold-rush rumors have evolved into legends repeated and enriched over time. The mysterious riches are known as Slumach’s Lost Mine, or Lost Creek Mine.
Document 10: Lupin Airport: Lupin Airport (IATA: YWO, ICAO: CYWO) was an airport located at Lupin Mine, Nunavut, Canada that was operated by Echo Bay Mines Limited. The airport closed sometime after the mine closed in 2005, but the runway is still present on the property.
Document 11: Ptarmigan and Tom Mine: 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).
Document 12: 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 13: Ferris-Haggarty Mine Site: 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.
Document 14: Iron Mountain Mine: Iron Mountain Mine, also known as the Richmond Mine at Iron Mountain, is a mine near Redding in Northern California, US. Geologically classified as a "massive sulfide ore deposit", the site was mined for iron, silver, gold, copper, zinc and pyrite intermittently from the 1860s until 1963. The mine is the source of extremely acidic mine drainage which also contains large amounts of zinc, copper and cadmium. One of America's most toxic waste sites, it has been listed as a federal Superfund site since 1983.
Document 15: McIntyre Mines: The McIntyre mine is an abandoned underground gold mine in Schumacher, Ontario, Canada, which has earned a place in Canadian mining history as one of the nation's most important mines. Its iconic headframe, located near downtown Timmins, has come to represent the entire Porcupine Gold Rush. The McIntyre also yielded a considerable amount of copper over its life.
ground_truth: Hedley Mascot Mine