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The New International Encyclopædia/Bituminous Shales

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Edition of 1905. See also Oil shale on Wikipedia; and the disclaimer.

1388804The New International Encyclopædia — Bituminous Shales

BITUMINOUS SHALES. Beds of shale occurring chiefly in the coal-measures, and containing such an amount of carbon and volatile matter that they are capable of being burned when mixed with but a little coal. They are indeed impure coal, with a large percentage of ash or earthy matter, which after burning retains the original form. See Coal.