Andrew.
UCG has been around since the early 1950's so it is not entirely new, I believe Russia used it for lamplights for many years and I don't think many people realise just how diverse coal actually is.
Below is a diagram of a Coal Tree, that we use in our mining education talks. Coal was and is still being used in 100's of products.
On the left is the English Version. On the right is the US Version
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