Which opened first, the Ptarmigan and Tom Mine or the Colomac Mine?
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).
Centralia Coal Mine Centralia Coal Mine is an open-pit coal mine, owned by the Canadian-based TransAlta Corporation. The mine is currently shut down. Also referred to as the TransAlta Centralia Mining (TCM) operation, the coal mine is located approximately 5 mi northeast of the city of Centralia, in Lewis County, in the US state of Washington. Together with Centralia Power Plant, it was bought in May 2000 by TransAlta for $554 million – $101 million for the mine and $453 million for the power plant.