967 resultados para Bituminous coal.


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Bitumoid contents in metalliferous sediments from axial parts of the East Pacific Rise (EPR) have been studied. Maximal concentrations of bitumoid matter and aromatic hydrocarbons have been found in the axial zones of the EPR as a result of hydrothermal processes and accumulation of endogenous matter in the sediments. Distribution of bitumoids and hydrocarbons coincides with deposition of ore minerals that indicates similarity of their sources.

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F also available in microfiche.

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"Appointed to inquire into the causes of the present dearness and scarcity of coal."

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Mode of access: Internet.