Ergo Exergy may well be using a version of CRIP. They're just not telling the proletariat about it.
From Ergo Exergy's web site: "The εUCG technology uses a variety of modern drilling methods, including high-precision directional holes, as well as conventional vertical and inclined (or angled) holes. In its arsenal are various methods of well-linking, the capability to inject different oxidants (air, enriched air, O2/H2O, CO2/O2 and so on), and a great variety of designs of underground gasifiers. It can be applied to coal in a wide range of geological conditions, with the following preferred parameters:
Coal seam thickness from 0.5 to 30 m.
Dip from 0 to 70 degrees
Depth from 30 to 800 m.
Calorific value (LHV) from 8.0 to 30.0 MJ/kg (which includes low-quality lignite and bituminous coal)"
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