Mineral oils: processes and products
By treatment of solid mineral, e.g., coal liquefaction, etc.
Specified agitation or circulation in gas contact zone
Inventor
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Apparatus for oil shale retorting
Combustion heater for oil shale
Method for rubblizing an oil shale deposit for in situ retorting
Methods for minimizing plastic flow of oil shale during in situ
Process for oil shale retorting using gravity-driven solids flow
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