Articles liés à Fuels of Western Canada and Their Efficient Utilization
Synopsis
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Présentation de l'éditeur
Fuels of Western Canada principal fuels of Western Canada are: Coal Electricity Natural Gas Peat Petroleum Wood COAL Coal is, of course, much the most important fuel of Western Canada, and ranges from the lignite of the prairies to the semi-anthracite of the Rocky mountains. The Coal Fields and Coal Resources of Canada contains a statement of the coal resources of the Dominion. This statement of reserves is divided into two groups. Group I includes coal in seams containing not less than one foot of merchantable coal occurring not more than 4,000 feet below the surface, including workable submarine areas. This group, Dr. Dowling states, includes the coal of economic value contained in seams of workable thickness, situated within a mineable distance of the surface. Group II includes seams containing not less than two feet of merchantable coal occurring at depths between 4,000 and 6,000 feet. Such seams are situated beyond present mineable distance of the surface and have not been considered in this paper. Both groups are subdivided into (1) Actual Reserves, which includes cases in which the calculation of the amount was based on a knowledge of the actual thickness and extent of the seams ;(2) Probable Reserves, which includes cases in which an approximate estimate only could be arrived at. At the present time, to be economically workable a seam must be more than one foot thick, and no coal mine in Canada approaches 4,000 feet in depth, though, in the Crowsnest district, some workings have a cover of several thousand feet. At great depths the greatly increased ventilation is a matter of expense and difficulty; creeps and subsidences of strata are unavoidable and either crush the coal or render it inaccessible; the capital and current expenditure of the mine grows in a higher proportion than the depths; the costs of raising water, coal, miners, etc., increase. D
(Typographical errors above are due to OCR software and don't occur in the book.)
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