Study suggests carbonated water can dissolve or suspend coal and carry it to surface. Mixture of carbon dioxide and water may be coal solvent that will make unmanned mining reality. When used with proposed process monitoring coal solubility with conventional strain gage, solvent is basis for rapid cost effective extraction of coal from underground seams.
Coal mining with a liquid solvent
NASA Tech Briefs ; 3 , 3
1979-01-01
Miscellaneous
No indication
English
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