04114688 is referenced by 251 patents and cites 9 patents.

Coal gas is produced in situ using the techniques of gasification, liquefaction and pyrolysis. Normal effluents to the atmosphere are recycled in part to the underground reaction zone for conversion into commercial products. Contaminants to underground aquifers are captured and injected into the underground reaction zone for destruction and transformation into useful products.

Title
Minimizing environmental effects in production and use of coal
Application Number
5/857102
Publication Number
4114688
Application Date
December 5, 1977
Publication Date
September 19, 1978
Inventor
Ruel C Terry
Denver
CO, US
Assignee
In Situ Technology
CO, US
IPC
E21C 43/00
E21B 43/26
E21B 43/24
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