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BE1012151A3
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Method to operate a coal deposit by underground coal gasification
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BE906016A
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Novel process for the production of methane by subterranean gasification of coal.
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BE904055A
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Process for improving the conditioning of gasifying agents used in subterranean gasification processes.
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BE901891R
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Methane and hydrocarbon(s) prodn. by underground hydrogenation of coal - involves regulating temp. by addn. of oxygen to gas contg. hydrogen
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BE901053A
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Coal converted underground to methane by hydrogasification - at pressures high enough to develop fissures for uniform hydrogen dispersion
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BE892704A
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Perforation of coal seam by reverse combustion - using combustion-supporting fluid in liq. form
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FR2491945A1
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Process for producing a high hydrogen gas by subterranean coal gasification
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BE890240A
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New method of preparing sites for the development of underground gasification of coal or lignite sources
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BE886433A
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Process for the exploitation of coal for underground gasification, with a view to the production of a gas with a high hydrogen content
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BE885682A
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Process for producing a high hydrogen gas by subterranean coal gasification
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BE885681A
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Process for the operation by subterranean gasification of a coal or lignite deposit
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BE881713A
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Process and apparatus for drilling a straight hole in a coal vane cut by a survey
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