KR20060098976A
|
|
Apparatus and method for measuring nickel ion concentration including in ferric chloride etching solution
|
US4544037A
|
|
Initiating production of methane from wet coal beds
|
US4465401A
|
|
Minimizing subsidence effects during production of coal in situ
|
US4448252A
|
|
Minimizing subsidence effects during production of coal in situ
|
US4463807A
|
|
Minimizing subsidence effects during production of coal in situ
|
US4484629A
|
|
Movable oxidizer injection point for production of coal in situ
|
US4437520A
|
|
Method for minimizing subsidence effects during production of coal in situ
|
US4250230A
|
|
Generating electricity from coal in situ
|
US4185692A
|
|
Underground linkage of wells for production of coal in situ
|
US4135578A
|
|
Method of preparing a wet coal seam for production in situ
|
US4114688A
|
|
Minimizing environmental effects in production and use of coal
|
US4099567A
|
|
Generating medium BTU gas from coal in situ
|
US4113313A
|
|
Recovering uranium from coal in situ
|
US4092052A
|
|
Converting underground coal fires into commercial products
|
US4102397A
|
|
Sealing an underground coal deposit for in situ production
|
US4089374A
|
|
Producing methane from coal in situ
|
US4018481A
|
|
Gasification of coal in situ
|
US4010800A
|
|
Producing thin seams of coal in situ
|
US4059151A
|
|
Methods of fluidized production of coal in situ
|
US4031956A
|
|
Method of recovering energy from subsurface petroleum reservoirs
|