Method for treating shale

Method of and apparatus for processing of oil shale

Method of and apparatus for the mixing and processing of fragile

Method of design for vertical oil shale retorting vessels and re

Method of dry distillation of volatile substances from mineral m

Method of effecting highly exothermic reactions

Method of extracting hydrocarbons from oil-containing rock or sa

Method of increasing the oil yield from hydrogenation of coal

Method of liquefaction of carbonaceous materials

Method of liquefaction of carbonaceous materials

Method of liquefying brown coal

Method of operating a wormgear drive at high energy efficiency

Method of operating an oil shale kiln

Method of pre-heating particles of a hydrocarbon-bearing substra

Method of processing oil-shale or tar sand

Method of recovery of oil and bitumen from oil-sands and oil sha

Method of reducing sludge accumulation from tar sands hot water

Method of removing bitumen from tar sand for subsequent recovery

Method of removing bitumen from tar sand utilizing ultrasonic en

Method of separating bitumen from tar sand with cold solvent