General layout of an underground coal gasifier. Note: not to scale;
Energies, Free Full-Text
Underground coal gasification (UCG) – Potential to increase coal reserve worldwide in environment-friendly manner
The design of ignition systems and a study of the development of the high temperature zone in well-type underground coal gasification - ScienceDirect
Evidence of coal conversion in the Majuba underground coal gasification pilot plant, South Africa
Genesis, controls and risk prediction of H2S in coal mine gas
Energies, Free Full-Text
Laboratory investigation on underground coal gasification technique with real-time analysis - ScienceDirect
Discussion on requirements of gasifier gas tightness for underground coal gasification production - ScienceDirect
PDF) Underground Coal Gasification Techniques for Different Geo-mining Conditions