First we need to understand what Met. Coal is...http://www.gccoal.com/about-us/met-coal-101.html
According to Natural Resources Canada
Coal is classified, based on the pressure and temperature (metamorphism) to which it has been subjected, into four types or ranks. These are, from lowest to highest metamorphism, lignite, sub-bituminous, bituminous and anthracite. Colour and hardness increase with rank. Anthracite and bituminous are hard and referred to as ‘black coals’, compared to sub-bituminous and lignite, which are soft and referred to as ‘brown coals’. There are no anthracite coal mines in Canada.
Bituminous coal is used for both metallurgical and thermal purposes, and sub-bituminous and lignite are used only for thermal purposes. The coal fields on the map are areas in which coal deposits of possible economic value occur in relatively close proximity. More than 90% of Canada’s coal resources are found in the Western Canada Sedimentary Basin, one of the country’s seven major basins of sedimentary rock, deposited during the past 500 million years, that possess fossil fuels (coal, oil or natural gas).
Anthracite is the highest ranked coal as it has the highest carbon content and is the hardest. Deposits are found in remote areas of northwestern British Columbia and in the Yukon.
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