The Tundra Mines was a gold producer in the Northwest Territories, Canada between 1964 and 1968, producing 104,476 troy ounces (3250 kg) of gold from 187,714 tons of ore.
 A detailed history is provided in the link below.
 Indian and Northern Affairs Canada has a project to remediate the Tundra Mine site under their Northern Contaminants Program, funded by the Canadian Federal Contaminated Sites Action Plan.
The Colomac Mine was a privately owned and operated open pit gold mine located 220 km northwest of Yellowknife in the Northwest Territories in Canada .
 The Colomac mine operated between 1990–1992, and 1994–1997.
 It was operated by Neptune Resources Limited that had little success in making a profit during its operation.
 In 1994, the mine had reopened under Royal Oak Mines Inc.
 Both Neptune Resources and Royal Oak Mines where both owned and operated by Peggy Witte.
 Due to low gold prices and high cost of mining, Royal Oak Mines was forced into bankruptcy.
 The Federal Government of Canada became owners of the mine, along with the related environmental issues.
 A major cleanup effort is under way to prevent the mine from polluting the environment, but this might be too late at this stage.
 This mine is now owned and controlled by the Indigenous and Northern Affairs department of the Federal government, while Public Works and Government services is the current contracting authority.
The Mactung Project is a planned open pit tungsten mine located in the Selwyn Mountains of eastern Yukon, Canada, on its border with the Northwest Territories.
 Mactung represents one of the largest tungsten resources in Canada having estimated reserves of 33 million tonnes of ore grading 0.88% WO.
 The Mactung Project completed the Yukon Environmental and Socio-economic Assessment process in July 2014, and the Yukon government approved construction of the mine (pending mining and water licence applications, and subject to a number of conditions) in September 2014.
 North American Tungsten Corporation estimated the capital cost of the mine's construction to be approximately CA$400 million.
 In November 2015, the Government of the Northwest Territories purchased the mineral deposit.
The Salmita Mine was a gold producer in the Northwest Territories, Canada during 1983 to 1987.
 The deposit was first discovered in 1945 and underground exploration was carried out in 1951-1952.
 It was reactivated for exploration by Giant Yellowknife Mines Limited in 1975 and entered production in 1983.
 They used the old camp and milling plant of the abandoned Tundra Mine, located a few kilometres to the south.
 The mine produced 179,906 troy ounces (5596 kg) of gold from the milling of 238,177 tons of ore.
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 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.
Tundra Mine/Salamita Mine Aerodrome (TC LID: CTM7) is a registered aerodrome that served the Tundra and Salamita Mines in the Northwest Territories, Canada.
The Thompson-Lundmark Mine was a gold producer in the periods 1941–1943 and 1947–1949, near Yellowknife, Northwest Territories.
 Gold was discovered here in 1938 by Fred W. Thompson and Roy Lundmark; they staked 46 claims that were incorporated into the mine.
 Underground and shaft work began in 1939.
 The mine processed 133,989 tons of ore to produce 70,339 troy ounces (2188 kg) of gold and 13,782 troy ounces (429 kg) of silver.
 The abandoned site was destroyed by forest fires during 1998.
 A detailed history is available in the link below.
Lost McLeod Mine is a legend of a lost mine in the Northwest Territories of Canada.
 The story has been featured in many books and magazines.
 The events in the legend have led to geographic locations in the Northwest Territories being named Headless Valley and Headless Creek located in Nahanni National Park Reserve.
 A creek called Sheep Creek was renamed McCleod Creek in honour of the Mcleod Brothers.
 20 people have lost their lives searching for The Lost McLeod Mine.
The Con Mine (1938-2003) was the first gold mine developed in the Northwest Territories, Canada, just south of Yellowknife.
 The property was staked by Consolidated Mining and Smelting Company of Canada (Cominco) in September 1935 in response to the discovery of visible gold nearby; the name "Con" is an abbreviation of "Consolidated".
 The advent of winter prevented any prospecting from being conducted, but work in the summer of 1936 led to the discovery of numerous gold veins.
 The Con Mine entered production in 1938 and ceased operations in 2003.
 It has produced over 5000000 ozt of gold from 12,195,585 tons of ore processed.
 The mine was over 6000 ft deep.

Question: Which mine in the Northwest Territories produced more gold, Tundra Mine or Thompson-Lundmark Mine?
Answer: Tundra Mine