Why the extraction is required to support industrial non-energy generating uses for coal, or otherwise needed in the context of greenhouse gas emissions reductions targets;
Felly, ar gyfer glo ynni ac unrhyw is-gynhyrchion a gynhyrchir ac a ddefnyddir ar gyfer gwresogi, bydd angen dangos bod angen cloddio’r glo i gwrdd â thargedau lleihau allyriadau nwyon tŷ gwydr.