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Definition and world resources of natural bitumens | 1990 | | Natural bitumens, semisolid or solid mixtures of hydrocarbons and as much as 50 percent heterocyclic compounds, are composed largely of carbon and hydrogen but have substituents of nitrogen, oxygen, sulfur, and trace metals, especially iron, nickel, and vanadium. Bitumens are soluble in organic solv... |
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Uinta Basin tar sand deposits | 1990 | Uinta Basin; Tar sand deposits; Utah | This report addresses an important need to the State of Utah; to define, tabulate, and document an economic resource which has aroused the interest of industry and academia and which is vastly undeveloped and little understood as to its potential. The need for this report has grown since the last ta... |