General layout of an underground coal gasifier. Note: not to scale;

Genesis, controls and risk prediction of H2S in coal mine gas

3D model of a modular UCG to GTL plant (Linc Energy, 2013b).

Investigation into the operation of an autothermal two-section subbituminous coal fluidized bed gasifier

Discussion on requirements of gasifier gas tightness for underground coal gasification production - ScienceDirect

General layout of an underground coal gasifier. Note: not to scale;

Discussion on requirements of gasifier gas tightness for underground coal gasification production - ScienceDirect

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The design of ignition systems and a study of the development of the high temperature zone in well-type underground coal gasification - ScienceDirect

Energies, Free Full-Text

Underground Coal Gasification (UCG), its Potential Prospects and its Challenges